Tested: No, Ryzen 7950X3D’s iGPU Is Not 4X Faster Than 7950X
AMD’s Ryzen 9 7950X3D debuted earlier this week, dethroning Intel’s Core i9-13900K as the most effective CPU for gaming when paired with a discrete GPU, to crucial acclaim. However PC Magazine famous in its 7950X3D overview that AMD’s 3D V-Cache know-how, the chip-stacking know-how behind the massive positive aspects in gaming efficiency 3x to 4x increase in performance the small built-in GPU onboard on the usual Ryzen 9 7950X. PC Magazine’s outcomes have been subsequently collected and cited by a lot of different publications, which clearly didn’t do their very own testing.
Whereas this is not terribly thrilling with the bottom RDNA 2 iGPU on Ryzen 7000 sequence processors, if the know-how have been utilized to an APU such efficiency achieve would theoretically be phenomenal, sparking fans’ hopes with the information. Nonetheless, we examined the efficiency claims by means of our personal iGPU assessments and located that the acknowledged take a look at outcomes appeared inaccurate.
After we first learn PC Magazine’s report and subsequent tales from different media associated to it, the outcomes appeared questionable in just a few technical methods. First, each CPUs have the identical underlying graphics engine, and the performance-boosting cache is present in solely one of many 7950X3D’s two computing chips.
Nonetheless, the iGPU resides on the I/O die and is a self-contained unit with its personal L2 cache. Subsequently, it doesn’t entry the L3 cache within the computation die in any significant approach (see diagram beneath). Subsequently, no efficiency positive aspects have been obtained from the extra cache bandwidth.
As a substitute, any improve should come from the 7950X3D’s phenomenal positive aspects in CPU computing efficiency. This pushes the GPU even more durable, however the limiting issue is not the CPU. As a result of the Ryzen 9 7950X3D’s iGPU solely has two RDNA 2 computing items (CUs), it does not have the horsepower wanted to make the most of the elevated reminiscence bandwidth or a sooner CPU. This unit is solely depending on GPU computing.
One other fast tip. AMD has been fairly clear that the brand new iGPU for the Ryzen 7000 sequence just isn’t designed for any significant sort of gaming. As a substitute, it is meant to supply enough efficiency for watching movies and doing primary workplace duties, together with primary viewing capabilities for troubleshooting and the like.
So whereas these outcomes are removed from inspiring, the GPU does precisely what it is presupposed to do. Additionally, no sane particular person would purchase the $699 Ryzen 9 7950X3D to play with its built-in graphics, so bear in mind we’re doing this for science.
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| Tom’s {Hardware} | 7950X3D and 7950X | 7950X3D (fps) | 7950X (fps) |
|---|---|---|---|
| Dota 2 – 1280 | +1.60% | 233.2 | 229.5 |
| Dota 2 -1920 | +1.8% | 228.7 | 224.5 |
| F1 2021 – 1280 | 0.42% | 71.3 | 71 |
| F1 2021 – 1920 | +0.80% | 37.9 | 37.6 |
| Shadow Tomb Raider – 1280 | +0.60% | 32.4 | 32.2 |
| Shadow Tomb Raider – 1920 | +1.00% | 19.6 | 19.4 |
| Unusual Brigade – 1280 | Identical | 49.7 | 49.7 |
| Unusual Brigade – 1920 | -0.80% | 24.1 | 24.3 |
| Grand Theft Auto V – 1280 | +0.67% | 105.1 | 104.4 |
| Grand Theft Auto V – 1920 | +0.89% | 56.4 | 55.9 |
We ran a sequence of benchmarks that included 5 subjects: Dota 2, F1 2021, Shadow of the Tomb Raider, Unusual BrigadeAnd Grand Theft Auto V, To check the efficiency of the Ryzen 9 7950X3D’s built-in GPU in opposition to the Ryzen 9 7950X’s iGPU at 1920×1080 and 1280×720 resolutions. We used low or medium settings for these titles. For our testing, we used the ASRock X670E Taichi motherboard and configuration that we used for our Ryzen 9 7950X overview.
The primary column sums it up very properly: The outcomes are largely inside one p.c of one another. And with such poor efficiency, that largely means lower than a fps distinction between the 2 configurations. This small delta falls inside the anticipated run-to-run variation of those benchmarks, so you may safely view them as a tie. There isn’t a efficiency distinction between these two iGPUs.
Testing built-in graphics is a fruitless and irritating process. That is usually an train of endurance as you might be uncovered to video games that seem like slideshows as a result of they run very slowly. However as a result of we’re gluttonous with punishment, we ran one other set of assessments to quell the dialogue.
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| Tom’s {Hardware} | X3D Chiplet and Bare | X3D Chiplet (CCD 0, fps) | Non-X3D Chiplet (CCD 1, fps) |
|---|---|---|---|
| Dota 2 – 1280 | +1.20% | 234.2 | 231.4 |
| Dota 2 -1920 | +0.80% | 229 | 227.1 |
| F1 2021 – 1280 | +1.57% | 71 | 69.9 |
| F1 2021 – 1920 | +0.50% | 37.3 | 37.1 |
| Shadow Tomb Raider – 1280 | +0.94% | 32.3 | 32 |
| Shadow Tomb Raider – 1920 | +0.50% | 19.6 | 19.5 |
| Unusual Brigade – 1280 | -1.00% | 49.1 | 49.6 |
| Unusual Brigade – 1920 | Identical | 24.2 | 24.2 |
| Grand Theft Auto V – 1280 | Identical | 106 | 106 |
| Grand Theft Auto V – 1920 | +0.90% | 56 | 55.5 |
The Ryzen 9 7950X3D and Ryzen 9 7950X have some minor variations, however there’s a method to additional slender the potential positive aspects from 3D V-Cache know-how: The 7950X3D has two chips, one with 3D V-Cache and one “naked”. Chip with out 3D stacked cache. We disabled one chip for every of those take a look at sequences, so we ran video games on both the 3D V-Cache chip solely or the naked chip.
As we have now extensively demonstrated in our different assessments of those two varieties of chips, there’s a clock frequency distinction between these two chips. The naked chip is about 500 MHz sooner, however that is so far as apple-to-apple for this take a look at as we are able to get.
Once more, there isn’t any important distinction between the chiplets. Whereas X3D stacking know-how may help, the Ryzen 9 7950X3D’s built-in RDNA 2 iGPU is not highly effective sufficient to deal with the extra assets. The RDNA comes with two computing items, 2 iGPUs, 4 ACEs and 1 HWS, so this ought to be fairly apparent.
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Our testing reveals that the 7950X3D’s iGPU is simply as compute-starved as the identical unit within the Ryzen 9 7950X, so there isn’t any achieve available. It isn’t that there is not a lot competitors – Intel’s iGPU is principally nugatory for gaming, both. Given our outcomes at the moment, it is secure to say that nothing has modified within the Ryzen 7000 sequence RDNA 2 iGPU’s relative efficiency positioning relative to Intel, which you’ll be able to see right here.
Does this imply that AMD’s 3D V-Cache know-how will not revolutionize an APU? In no way, as a result of AMD may theoretically create a design that would make the most of the elevated throughput of a 3D stacked cache.
In truth, Infinity Cache on RDNA 2 and RDNA 3 devoted GPUs is principally precisely that concept, and but AMD has chosen to not omit Infinity Cache within the built-in RDNA 2 options we have seen. Briefly, placing an excessive amount of cache on an built-in GPU appears unlikely on condition that AMD is utilizing its stable APU chips to focus on the decrease finish of the market, the place premium pricing of 3D V-Cache would make no sense — Xbox Sequence X and PlayStation 5 If we do not rely . It could sound good, however in follow AMD has different objectives in thoughts for the PC market.
#Examined #Ryzen #7950X3Ds #iGPU #Quicker #7950X
