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AMD Ryzen 9 7950X

5

A multi-threading monster of a computational CPU, hitting clock speeds we might solely beforehand get close to by critical overclocking. It is also bought an Eco Mode that delivers cool-running efficiency even in video games, although it is within the body price battle the place Zen 4 falls down in opposition to the present finest Intel chips.

For

  • Monstrous multithreading efficiency
  • $100 lower than 5950X
  • Eco mode bangs
  • 5.9GHz?!

In opposition to

  • Do you want a 16-core CPU?
  • Struggles in gaming in opposition to Alder Lake
  • The place’s the actual X3D gaming chip?
  • Scorching. Or is it?

The AMD Ryzen 9 7950X is the vanguard for a complete new era of CPUs and GPUs launching in these subsequent few months. However, regardless of its many advances, a complete new AM5 motherboard platform, and glossy new heatspreader design, this is not the finest gaming CPU (opens in new tab) we had been hoping for.

I imply, it is good. And definitely smashes the 16-core Ryzen 9 5950X (opens in new tab) from the Zen 3 era, however this Zen 4 chip has a resurgent Intel CPU structure to take care of in Alder Lake. And that is getting its personal Raptor Lake replace within the coming weeks, too.

However we have come a great distance (child), and it has been a gradual highway from the heady instances of 2017, when AMD launched its very first AMD Ryzen processor. Closing the hole on Intel’s efficiency lead was solely a part of the puzzle for its burgeoning line of Zen architectured CPUs; consistency was at all times the watchword. AMD knew then the long-term success of its new processor line, whether or not in our gaming PCs, laptops, or in datacentres the world over, was right down to delivering on its guarantees era after era.

And it is arduous to argue that AMD hasn’t executed precisely that within the years since its inception. Every successive CPU era has constructed on these preliminary Zen foundations, confidently pushing the structure to larger efficiency ranges, and with extra expansive specs lists. And it is executed so on an everyday cadence, just about precisely when and the way it stated it will.

Delivering on its guarantees is what’s put AMD within the place it is in now—threatening Intel on all fronts. And, at a time when Intel has been struggling to ship what it promised, that is cemented AMD’s place. 

The brand new Ryzen 9 7950X is an evolution of the Zen 3 design, and is directly a brute of a processor, working on the ragged fringe of its thermal constraints, and but with an impressively elegant design. Even on the surface. 

Yeah, I am going to say it, I really like that new heatspreader look. 

But it surely’s nonetheless not the processor I would choose up immediately and there is a likelihood it’d get savaged on the market for being extra of a spinoff than a revolutionary CPU. There isn’t any spectacular new tech on show, no vertically bonded cache chips, no additional cores, only a wholesome clock pace bump, some finessed microarchitecture, and a brand new socket.

Zen 4 structure and spec

AMD Ryzen 9 7950X CPU

(Picture credit score: Future)

Ryzen 9 7950X spec

AMD Ryzen 9 7950X CPU

(Picture credit score: Future)

Cores: 16

Threads: 32

Socket: AMD AM5

CCD lithography: TSMC 5nm

CCD die dimension: 70mm²

CCD transistor depend: 6.5 billion

IOD lithography: TSMC 6nm

IOD die dimension: 122mm²

IOD transistor depend: 3.4 billion

Max enhance clock: 5.7GHz

Base clock: 4.5GHz

L2 cache: 16MB

L3 cache: 64MB

Reminiscence assist: DDR5-5200 (non-OC)

TDP: 170W

Value: $699

At its most simple degree, the Ryzen 9 7950X is a straight 16-core, 32-thread CPU, packing a pair of eight-core compute chiplets along with an I/O die to get all the information into and out of the processor package deal. 

However although Zen 4 is a spinoff structure constructed from Zen 3 (opens in new tab), there are some basic variations. Firstly, it is constructed on a brand new course of node from its long-time TSMC foundry associate. The eight-core chiplet (CCD) is constructed on the 5nm lithography whereas the I/O die (IOD) has shifted to a 6nm node. 

The transfer from 7nm to 5nm will not be large—although it’s actually delivering a extra environment friendly chip on the entire—however going from the 12nm IOD of Zen 3 to a brand new 6nm model is. And arguably the largest modifications have really been made in there on the platform degree, reasonably than within the new Zen 4 CCD. 

AMD has made the transfer to a DDR5 reminiscence controller, and it is also popped PCIe 5.0 assist in there too. That offers you a similar quick reminiscence as Intel’s Alder Lake platform, however with a brand new era interconnect that can provide large bandwidth alternatives for future graphics playing cards and next-gen SSDs. Which will not be right here till November, however hey, the brand new AM5 platform is prepared not less than.

AMD Zen 4 architecture

(Picture credit score: AMD)

However, for the primary time exterior of its APU vary, AMD can also be packing built-in graphics into its chips, into the IOD. That is current-gen GPU expertise dropping into all of its Ryzen 7000-series CPUs. Earlier than you get too excited, nonetheless, AMD has been at pains to level out that is principally simply to maintain the lights on to your monitor with no separate GPU. It is also there to assist promote into the company Dell field world Intel has dominated as a result of most firms don’t desire discrete graphics playing cards of their workplace methods.

It is too distracting for the workforce. Or one thing. 

No matter, there are a pair of RDNA 2 compute models in there, which do not even get to characteristic within the chip’s reviewer’s information. It does not even seem on the important specs record of any of the Ryzen 7000-series processors; it is that irrelevant exterior the corpo world.

Until your GPU dies, after all, and you want to get your PC up and working whether or not it could possibly sport or not, till you remortgage the youngsters so you possibly can afford a brand new RTX 4090 (opens in new tab). But it surely does have one different doubtlessly helpful characteristic: Hybrid Graphics. 

It is mainly like a gaming laptop computer, the place more often than not the show is definitely related to the CPU’s built-in graphics, and the beefy discrete GPU solely kicks in when a sport is performed or one thing else in want of graphics {hardware}. Sure, now you can plug straight into the motherboard and nonetheless sport in your highly effective graphics card.

As a PC gamer, you most likely should not do this, although, as a result of it does have an effect on the gaming efficiency of your system. To an impressively negligible extent, I’ve to confess given what it is doing. At its very worst I noticed a ten% drop at 1080p body charges, however typically, it was round 3–5% down. That is not dangerous, however nonetheless not likely value it if you happen to’re chasing the very best body price you possibly can squeeze out of your gaming rig.

AMD Zen 4 architecture

(Picture credit score: AMD)

Over in that 5nm CCD, there have been another modifications made. It is primarily the identical core structure as Zen 3, with the identical 32MB L3 cache catering to an eight-core complicated. To get to its 16-core make-up the Ryzen 9 7950X comes with a pair of these compute dies, every holding eight cores and a complete of 64MB of L3 cache. However there is a doubling of the L2 cache to assist cut back total latency with every core getting its personal 1MB L2 “to supply essential information quicker,” says AMD’s Mark Papermaster throughout our introduction to the structure.

Although this additional cache bump just isn’t in the identical league because the current Ryzen 7 5800X3D (opens in new tab), however we’ll come again to the way forward for 3D V-cache afterward. As will AMD itself; there is a cause there is no Ryzen 9 7800X within the launch lineup.

“With Zen 3 we elevated the execution width,” Papermaster tells us. “And so with Zen 4 it grew to become necessary for us to work on how we feed the directions even quicker into the machine. And that is why you see a lot of the enhancements coming from the entrance finish and department prediction. Actually that makes up virtually 60% of that IPC achieve.”

That is echoed by AMD architect Mike Clark, the daddy of Zen, throughout our deep dive. 

“With Zen 4 as barely a spinoff structure, we knew that with Zen 3 we actually elevated the execution aspect, added a pair extra execution models. However we knew with Zen 4 we’d like to have the ability to feed these issues as quick as attainable to actually get the good thing about the brand new wider engine that we have now.”

AMD Zen 4 architecture

(Picture credit score: AMD)

So, it is the entrance finish of the Zen 4 structure the place AMD has put probably the most thought in from a core design perspective. And that begins with the department prediction block, as a result of that is the place plenty of the effectivity and efficiency of a chip design might be received or misplaced.

“Probably the most inefficient issues,” says Clark, “is clearly executing the improper directions, after which having to throw that away. So we wish to be sure we’re on the best path, in addition to getting that proper path within the machine as quick as attainable”

In microarchitecture phrases, it is mainly all about widening the funnel on the high, whereas additionally jamming extra information down into the integer and floating level execution machine. That is my dumb manner of claiming AMD is trying to widen any of the bottlenecks of the Zen 3 design.

The trade-off with growing the cache, nonetheless, is a rise in latency, however that is one thing AMD has internalised as a part of its design course of with Zen 4. The latency has nonetheless gone up, however the truth that it could possibly get extra directions working by the processor at anyone time, and with the general efficiency enhancements the structure then presents, that can offset what it is calling “a small improve in latency.”

How does the Ryzen 9 7950X carry out?

AMD Ryzen 9 7950X CPU in a motherboard socket

(Picture credit score: Future)

I imply, it’s actually quick. I did a little bit of a double take testing the numbers once I noticed the Cinebench R23 single thread run tipping the odd core as much as 5.9GHz. Even steady at 5.8GHz was fairly stunning. It isn’t fairly that prime beneath all-core load, however 5.4GHz throughout all 16 cores nonetheless makes it one blazing chip.

It is blazing in one other manner, too, as a result of rattling, does this factor get sizzling?! Truly, no. It is okay. AMD says that “At 95 levels it isn’t working sizzling, reasonably it should deliberately go to this temperature as a lot as attainable beneath load as a result of the facility administration system is aware of that that is the perfect strategy to squeeze probably the most efficiency out of the chip with out damaging it.”

Apparently, the Ryzen 7000-series processors are designed to run at this degree “24/7 with out threat of harm or deterioration.”

However does quick and sizzling make it the last word gaming processor? Not likely, by no means in truth. On that rating, it should usually get outperformed by the eight-core Ryzen 7 7700X which launches alongside it. It’s comfortably quicker than the earlier era’s Ryzen 9 5950X, which is necessary, particularly as that was priced some $100 larger on launch.

It additionally often outpaces the Ryzen 7 5800X3D, which was AMD’s most up-to-date play for the quickest gaming CPU crown. However in opposition to Intel… properly, the Core i9 12900K (opens in new tab) continues to be wanting like an excellent gaming processor. 

Gaming efficiency

AMD Ryzen 9 7950X benchmarks

(Picture credit score: Future)

In gaming phrases, with the very same GPU, the identical drivers, and the identical OS, Intel’s Core i9 12900K retains itself forward of this, AMD’s newest chip. The chip it has been calling “the most effective for players and creators.”

There is not a sport in our take a look at suite which has the brand new Zen 4 chip forward of Intel’s Alder Lake CPU. Which does not make for excellent studying when you think about that it’ll quickly get replaced by a fair speedier Raptor Lake vary of processors that would push gaming efficiency even additional forward of AMD’s chips.

Creator efficiency

On the multi-threaded aspect, nonetheless, AMD’s high-speed benefit involves the fore. Severely, I am going to take that 95°C temperature if I can have all 16 cores working at 5.4GHz for the period. That makes all of the distinction in terms of issues like rendering and encoding, and AMD’s dominance is evident to see.

Within the Blender render take a look at, the Ryzen 9 7950X is over 50% quicker than the Core i9 12900K, and over 40% quicker than the Zen 3-based Ryzen 9 5950X. That highlights simply what a multi-threaded monster the brand new Zen 4 platform can create, and is de facto the place all these front-end enhancements actually come to the fore.

It is the wedding of brute-forcing the clock pace and the magnificence of these microarchitecture tweaks that ship a processor that may be the idea of a strong dwelling workstation.

I imply, there is a cause the high-end desktop (HEDT) CPU market is lifeless; these previous Intel Core X chips, and even AMD’s personal Threadripper. They do not seem on the PC roadmap exterior of the skilled area nowadays. And that is as a result of AMD gambled on larger core counts after which once more on an progressive chiplet design that has been one of many greatest success tales in fashionable processor creation.

However you do not want a Threadripper chip when the brand new Ryzen 9 7950X rocks up with 16 cores of Zen 4 grunt and can comfortably push every one in every of them to five.4GHz for a fraction of its worth. There are few bed room videographers or renderers who would not be enthusiastic concerning the efficiency of this chip and would argue paying one other $1,700 for a 24-core Threadripper Professional makes any sort of sense.

The brand new AM5 platform’s penchant for the quantity 5 is demonstrated by the rise in reminiscence bandwidth owing to the assist for DDR5 reminiscence. With the brand new EXPO reminiscence profiles tailor-made for each DDR5 and AMD’s new platform, we might immediately hit the highest frequency with our G.Talent DDR5-6000 equipment. That delivers a straightforward 68% improve in reminiscence bandwidth over the earlier Zen 3 era.

The advantages of the PCIe 5 interface, nonetheless, will not manifest till we pay money for some stable state storage drives maxing out the elevated bandwidth once they arrive in November.

It is fascinating to notice, although, that whereas our AMD system is working with 32GB of DDR5-6000, our Intel Alder Lake machine is slumming it with one other G.Talent set, however a 32GB equipment working at DDR5-5600. And it nonetheless presents larger reminiscence bandwidth.

System efficiency

However what of effectivity? That was the watchword across the change to Zen 4 and a 5nm CCD, however the Ryzen 9 7950X has a TDP of 170W and a max socket energy of 230W. Even the Ryzen 5 7600X has a excessive TDP of 105W versus the earlier gen at 65W.

However the efficiency per watt of Zen 4 is spectacular, particularly in terms of gaming. Measured in Far Cry 6 we’re getting 1.61fps per watt of energy, in contrast with lower than 1fps per watt with the previous Ryzen 9 5950X. It is also rather a lot cooler once you’re speaking about constant gaming workloads.

Certain, beneath a 100% all-core load the Zen 4 cores are stable at over 95°C, however in video games, we measured it at simply 65°C.

What’s fascinating, nonetheless, is that for all of the speak of Intel’s determined energy calls for making its chips energy hungry and inefficient, the Core i9 12900K is each higher by way of efficiency per watt and thermals.

You’ll be able to take the shackles off Intel’s chips, and permit them to make use of all the facility in your motherboard’s BIOS, however if you happen to persist with Intel’s personal specs they will not stretch to the identical ranges. Okay, it should nonetheless high the 200W level when thrashing by Cinebench R23, however in video games, you are taking a look at 81W and 50°C—decrease than this 5nm Ryzen chip.

Eco Mode efficiency

PC Gamer take a look at rig

AMD

Motherboard: ASRock X670E Taichi

Reminiscence: G.Talent Trident Z5 Neo DDR5-6000 CL30 2x 16GB

Intel

Motherboard: Asus ROG Z690 Hero

Reminiscence: G.Talent Trident Z5 RGB DDR5-5600 CL36 2x 16GB

Graphics card: Nvidia RTX 3080 10GB

Storage: 1TB WD Black SN850

Cooler: Corsair H100i RGB

PSU: NZXT 850W

Chassis: DimasTech Mini V2


 

Even in Eco Mode, the Ryzen 9 7950X cannot carry its efficiency per watt as much as the degrees of the Alder Lake chip. However Eco Mode continues to be one of many greatest wins for the brand new Zen 4 cores. The efficiency enhance going from 7nm to 5nm is at its biggest on the 65W degree, and that’s highlighted by simply how a lot quicker the Zen 4 chip is, even locked to 65W, in contrast with the Ryzen 9 5950X. 

In Eco Mode, it should additionally nonetheless beat the Core i9 12900K in artistic functions, too.

Truthfully, if I am working a Zen 4 chip in my rig, I will be setting it to Eco Mode on a regular basis. You do not want the additional multi-threading efficiency for more often than not you utilize your PC, and once you do, simply swap it out of Eco Mode and let these cores fly. You barely lose any efficiency whereas gaming—particularly not on the 1440p or 4K resolutions—and the decrease temps will make for a quieter rig, too. 

Admittedly for the time being that is not really easy. Within the pre-release BIOSes it’s important to dig round within the AMD Overclocking settings to manually set PPT limits, and so forth. however AMD is promising to make it a extra accessible characteristic in your Home windows desktop after launch.

I hope it does, as a result of Eco Mode is among the issues which units the Zen chips aside, and it is higher than ever.

How does the Ryzen 9 7950X stack up?

AMD Ryzen 9 7950X CPU

(Picture credit score: Future)

The place does the brand new Zen 4 flagship chip stand within the CPU market? In the present day, it is the most effective chip for creators, and possibly even the most effective chip for creators who additionally sport. But it surely’s actually not the most effective gaming CPU.

This $700 16-core processor, regardless of its heady 5.8GHz clock pace, nonetheless falls behind Intel’s barely cheaper Core i9 12900K in terms of uncooked body charges. And you may nonetheless get the GPU-less KF model of that Alder Lake CPU for a lot lower than that. Although on condition that Raptor Lake is on its manner very quickly I would not suggest that buy proper now, both.

However the multicore efficiency is fairly staggering. If you wish to throw a ton of complicated computational duties at a shopper platform, say for video rendering or encoding, then there may be nothing on the market on this worth bracket that may come near the processing prowess of AMD’s new Zen 4 high chip.

Its last-gen flagship all of a sudden appears very previous certainly.

That is true even if you happen to restrict the Ryzen 9 7950X to simply 65W. I believe Eco Mode is the factor that has impressed me most concerning the new structure, displaying simply how environment friendly it may be. Sadly, to be aggressive with Intel’s Alder Lake, AMD has needed to go all out on the facility and thermals by default to offer its Zen 4 cores sufficient headroom to carry out at their finest. 

And the uncooked clock pace numbers are spectacular, too. I imply, hitting 5.8GHz inventory, out of the field is one thing I do not assume many people had been actually anticipating. 

AMD Ryzen 9 7950X CPU

(Picture credit score: Future)

I have been testing the eight-core Ryzen 7 7700X alongside this 16-core chip, and that may be a efficiency gaming chip that can typically even beat the Ryzen 9 7950X. But it surely, too, is shy of the Alder Lake competitors in uncooked body charges, although can not less than match it by way of efficiency per watt.

Although if we’re speaking about AMD gaming CPUs, there’s a massive, flappy-eared gray mammal within the room. There isn’t any Ryzen 7 7800X within the launch lineup, and that appears like a spot tailored for a cached-out X3D chip, alongside the strains of the Ryzen 7 5800X3D, to pop into. With an unlimited chunk of additional L3 cache to play with, the 3D V-cache design is made for gaming, and that ought to be AMD’s actual play for the most effective gaming CPU. Although when that launches, we nonetheless do not know.

AMD has been very cagey about its plans, initially suggesting it will be launched this 12 months and now we’re not so positive. Joe Macri instructed us that “we’re not attempting to dribble issues out to you, the cycle time of working stuff by the fab simply takes longer once you wish to take two items of silicon and actually fuse them collectively on the molecular degree.”

Till it is bought these massive cache chips bonded onto the CPU we’ll have to attend and see what additional gaming impression the expanded L3 cache can have alongside a Zen 4 core.

Ryzen 9 7950X verdict

AMD Ryzen 9 7950X CPU

(Picture credit score: Future)

I really feel fairly constructive about AMD’s high Zen 4 processor, which is possibly somewhat unusual on condition that it is extra evolution than revolution and does not fairly have the standout efficiency leaps that characterised the earlier generations of Zen chips. 

However I believe we have most likely been spoiled by AMD in current instances.

The Ryzen 9 7950X continues to be an enormous generational soar over the Ryzen 9 5950X, nevertheless it hasn’t managed a convincing displaying in opposition to its essential Intel rival. That is very true in gaming, and whereas the multi-threaded efficiency is fairly spectacular, we’re ready the place we all know Intel’s bumping that up with its incoming Raptor Lake chips and that would totally negate the enhancements AMD has managed to muster for Zen 4.

Inevitably then you’ll seemingly see rather a lot made about it being a disappointing launch. However, to me, it appears like a assured, constant launch. You can argue it is possibly not tremendous formidable, however AMD has bought the place it’s immediately by at all times delivering on its Zen guarantees, and but once more Dr. Su’s gang has completely executed that.

The Ryzen 9 7950X is the quickest, hottest, most power-hungry Zen chip but, however although it isn’t the gaming champ it’s nonetheless the most effective all-round AMD CPU.

AMD Ryzen 9 7950X

A multi-threading monster of a computational CPU, hitting clock speeds we might solely beforehand get close to by critical overclocking. It is also bought an Eco Mode that delivers cool-running efficiency even in video games, although it is within the body price battle the place Zen 4 falls down in opposition to the present finest Intel chips.

Dave has been gaming for the reason that days of Zaxxon and Woman Bug on the Colecovision, and code books for the Commodore Vic 20 (Demise Race 2000!). He constructed his first gaming PC on the tender age of 16, and eventually completed bug-fixing the Cyrix-based system round a 12 months later. When he dropped it out of the window. He first began writing for Official PlayStation Journal and Xbox World many many years in the past, then moved onto PC Format full-time, then PC Gamer, TechRadar, and T3 amongst others. Now he is again, writing concerning the nightmarish graphics card market, CPUs with extra cores than sense, gaming laptops hotter than the solar, and SSDs extra capacious than a Cybertruck.

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