AMD Ryzen 9 3900XT Desktop Processor Review: Refined Silicon Inbound

AMD announced the new XT lineup a few weeks ago with increased clock speeds and silicon improvements aimed at helping the processors maintain a higher clock residency. Three new processors would be added to the XT lineup in the form of the AMD Ryzen 5 3600XT, Ryzen 7 3800XT and Ryzen 9 3900XT. Best of all, AMD stated that these new XT parts would be priced the same as their X contemporaries at launch. The X parts are exactly a year out and their street prices have dropped a bit. The AMD Ryzen 9 3900X retails for INR 44,800 in India and the new Ryzen 9 3900XT should be priced at INR 46,000 if everything else stays the same. Unfortunately, in recent months we have seen that Covid-19 is hitting every industry and street prices of these new parts are expected to be slightly higher. We’ll know more when these parts start retailing.

AMD Ryzen 9 3900XT Desktop Processor Review Motherboard

AMD Ryzen 9 3900XT



Coming back to the new XT processors, the main improvement with the silicon has more to do with how TSMC has improved their 7nm FF process. The same is used by AMD and gives AMD better control over the voltage/frequency curve, which in turn allows an improvement in the clock speed. While boost clocks have ramped up, processors generally don’t spend much time in the higher frequency ranges, with the result that incremental bumps on the boost clock don’t translate into noticeable performance gains. Improvements to the base clock have a much more tangible effect on overall performance and that’s where the new XT processors outshine their X contemporaries.

AMD 3rd Gen RYZEN 9/7/5 Matisse XT Refresh Lineup and Specifications

AMD’s new XT lineup brings incremental changes to the specs of the new XT processors over their X variants. And there’s really no need to drive up the processor prices for such a tiny improvement in silicon. The competition could really take a page out of AMD’s book in this regard. The Ryzen 5 3600XT and Ryzen 9 3900XT bring some bin steps in the Boost Clock, while the Ryzen 7 3800XT shows twice as much improvement. The base clock speeds, as mentioned earlier, are the same between the X and XT variants. Here are the specifications in a row.

















Ryzen 5 Ryzen 7 Ryzen 9
CPU 3600XT 3600X 3800XT 3800X 3900XT 3900X
Basic clock 3.8GHz 3.8GHz 3.9GHz 3.9GHz 3.8GHz 3.8GHz
boost clock 4.5GHz 4.4GHz 4.7GHz 4.5GHz 4.7GHz 4.6GHz
Process node TSMC 7nm TSMC 7nm TSMC 7nm TSMC 7nm TSMC 7nm TSMC 7nm
cores 6 6 8 8 12 12
wires 12 12 16 16 24 24
L3 cache 32MB 32MB 32MB 32MB 64MB 64MB
TDP 95 W 95 W 105 W 105 W 105 W 105 W
Price (USD) $249 $249 $399 $399 $499 $499
Price (rupees) Rs.23,588 €20,874 € 36,568 €33,618 €46,008 €42,468
Forex rate USD-INR 74.85 68.44 74.85 68.44 74.85 68.44
DRAM Freq. support 3200MHz 3200MHz 3200MHz 3200MHz 3200MHz 3200MHz
Bundled cooler Wraith Spire V2 Wraith Spire V2 No Wraith prism No Wraith prism

The international prices for the SKUs have been kept the same. The Ryzen 5 3600X and 3600XT have a launch price of $249, but we’re more concerned about Indian prices and AMD is ubiquitous in this regard. The Ryzen 5 3600X cost INR 20,874 at launch and the new Ryzen 5 3600XT costs INR 23,588. Since these are imports and depend on the USD-INR rates, it seems that the two are actually priced the same when you take into account the USD-INR rates of their respective launch dates. There is a small difference of $10 between the two that is within the margins of error.

AMD Ryzen 9 3900XT Desktop Processor Review Motherboard Gaming

AMD Ryzen 9 3900XT desktop processor



The same goes for the AMD Ryzen 7 3800XT and Ryzen 9 3900XT. However, there is one important difference here. The X variants, ie the 3800X and 3900X, came with AMD’s Wraith Prism coolers, while the XT variants did not. The Amazon.com price for the AMD Wraith Prism cooler is $41.99, so there’s a distinct difference in the value proposition of the 3800XT and 3900XT processors. It should also be noted that people who go for high-end desktop processors often opt for better third-party coolers, so the trade-off of losing a cooler for a slightly higher clock speed is something consumers would want to consider when choosing. between the X and XT variants of these two processors.

AMD RYZEN 9 3900XT Performance

The AMD Ryzen 9 3900XT is an incremental upgrade over the Ryzen 9 3900X as only the boost clock speed has increased. However, several improvements have been made to the silicon that allow the Ryzen 9 3900XT to make better use of this minor improvement. Let’s see how that plays out in the benchmarks.

We tested the device on the following configuration:

AMD RYZEN TEST RIG

CPU: AMD Ryzen 9 3900XT

Motherboard: ASUS ROG STRIX X570-E Gaming

SSD: Samsung 970 PRO 1TB

HDD: Seagate FireCuda 2TB ST2000DX002

RAM: Corsair Dominator PRO 16GB (2x 8GB) @3200MHz

cooler: Corsair H115i Pro

PSU: Corsair HX1050

As always, we’ll start with Cinebench 20 to see how the processor stacks up in single-threaded and multi-threaded performance. In the single-threaded benchmark, the AMD Ryzen 9 3900XT outperforms the Ryzen 3900X by about 3.5 percent and still maintains an edge over the Intel Core i9-9900K. However, compared to the Intel Core i9-10900K, the two are neck-and-neck in single-threaded performance, but the tables are running in the multithreaded benchmark while the AMD Ryzen 9 3900XT races way ahead.

AMD Ryzen 9 3900XT Desktop Processor Review Motherboard Cinebench R20

AMD Ryzen 9 3900XT Cinebench R20 1T



AMD Ryzen 9 3900XT Desktop Processor Review Motherboard Cinebench R20 nT

AMD Ryzen 9 3900XT Cinebench R20 nT



Since POV-Ray is a multi-threaded benchmark, the Ryzen 9 3900XT is ahead of the pack due to its ridiculous core count. However, if you look at the single-threaded performance, the Intel 10900K takes the lead. Compared to the 3900X, the improvement is about 3 percent.

AMD Ryzen 9 3900XT Desktop Processor Review Motherboard POV-Ray 1T

AMD Ryzen 9 3900XT POV Ray 1T



AMD Ryzen 9 3900XT Desktop Processor Review Motherboard POV-Ray nT

AMD Ryzen 9 3900XT POV Ray nT



Our Handbrake run basically consists of transcoding a 4K video clip from one CODEC to another without changing the resolution. Handbrake quickly integrates new CPU encoding engines and is favored by the creator community. The 3900XT shows a marked reduction in encoding times over the Intel Core i9-10900K, but remains in the same neighborhood as the Ryzen 9 3900X.

AMD Ryzen 9 3900XT Desktop Processor Review Motherboard Handbrake

AMD Ryzen 9 3900XT Handbrake



Blender is a fairly well-known open-source rendering software. In this benchmark, we look at the time it takes for a run to complete the rendering. So the lower the score in this test, the better the CPU. The AMD Ryzen 9 3900X ends the run a minute earlier than the Ryzen 9 3900X, which is another incremental improvement. However, this difference only becomes apparent when multiple iterations of the same workload are run. In a single run, the difference is barely there.

AMD Ryzen 9 3900XT Desktop Processor Review Motherboard Blender

AMD Ryzen 9 3900XT Blender



The 7-zip decompression benchmark keeps the Ryzen 9 3900X slightly ahead of the XT processor. We had to repeat this particular benchmark more than the usual number of iterations to confirm the results.

AMD Ryzen 9 3900XT Desktop Processor Review Motherboard 7-Zip

AMD Ryzen 9 3900XT 7-Zip



WebXPRT is a browser-based JS and HTML5 benchmark that exhibits several traces of typical browsing behavior and is more focused on single-threaded workloads and burstiness. We see that the Intel Core i9-10900K outperforms the Ryzen 9 3900XT by about five percent.

AMD Ryzen 9 3900XT Desktop Processor Review Motherboard WebXPRT

AMD Ryzen 9 3900XT WebXPRT



AMD Ryzen 9 3900XT Desktop Processor Review Motherboard Gaming

AMD Ryzen 9 3900XT Gaming



In our gaming benchmarks, we see an average improvement of 1-2 FPS with the Ryzen 9 3900XT over the Ryzen 9 3900X at 1080p. We played GTA V, Ashes of the Singularity, Assassin’s Creed Odyssey. HITMAN 2, CSGO, PUBG, Overwatch and Apex Legends.

verdict

For folks looking to build a new PC, the AMD Ryzen 9 3900XT is a pretty obvious choice over the vanilla Ryzen 9 3900X due to the slight increase in boost clock speeds you get. Unlike the 3900X, the 3900XT doesn’t come with a Wraith Prism cooler or any cooler, so that’s something PC builders may want to factor into their purchasing decisions. Other than that, the Ryzen 9 3900XT is a great processor for PCs focused on gaming, content creation, 3D modeling, and multitasking in general. Moreover, the Indian price (INR 46,000) is not a deal breaker.

Burak Bilginer
Burak Bilginer bir bilgisayar dahisidir. Seyahat etmeyi sever ve birçok farklı ülkeye gitti. Burak, seyahat etmediği veya programlama yapmadığı zamanlarda Oyun ve Teknoloji Ürünlerinin yeni parçalarını incelemeyi sever. Oyunla ilgili herhangi bir sorunuz varsa, Burak cevaplamaktan mutluluk duyacaktır!