AMD is celebrating Zen 2’s first anniversary with the release of Ryzen 9 3900XT, Ryzen 7 3800XT and Ryzen 5 3600XT. These CPUs are made on the refined 7nm manufacture process that delivers higher clock speed and better performance-per-watt. How do these stack up against their older brethren? Let’s take a closer look, shall we?
Being made on the optimized 7nm process, these three Zen 2 processors gain a 4% single-core performance increase over their regular X variants. As for multi-cores, the 142W PPT (Package Power Tracking) and 140A EDC (Electrical Design Current) limit remain the same, but manual overclocking should easily get you 4.5~4.7 GHz on all cores.
- R5 3600XT : USD $249/ NTD $7770
- R7 3800XT : USD $399/ NTD $12970
- R9 3900XT : USD $499/ NTD $15970
The R5 3600XT and R9 3900XT are both getting +100 Mhz boost clock increase while the R7 3800XT is getting a +200Mhz increase. All of them will be available starting 7/7/2020.
As far as packaging goes, only the R5 3600XT comes with a Wraith Spire cooler. For the other two higher-end models, AMD hopes that buyers will supply their own AIO liquid coolers or custom loop to squeeze every drop of performance out of them via overclocking.
The Ryzen 7 3800XT and Ryzen 5 3600XT both contain a 1 CCD and 1 cIOD chip. The main difference between the two is that the R5 3600XT only has 6 cores/ 12 threads while the R7 3800XT retains the full 8 cores/ 16 threads.
Here are the specs of both processors:
- R5 3600XT : 3.8 GHz stock/ 4.5 Ghz boost, 4MB L2 cache, 32MB L3 cache
- R7 3800XT : 3.9 GHz stock/ 4.7GHz boost，4MB L2 cache, 32MB L3 cache
RAM overclocked to 3600Mhz via X.M.P.
Ambient temperature: 27C
Windows 10 Pro 64bit 1909
UAC – OFF
Windows Defender – OFF
Screen saver – OFF
Power plan – high performance
▲In our CrystalDiskMark SSD benchmark, the two XT series processors read and write performance is almost the same as others Ryzen Zen 2 processors we have tested.
Cinebench R15/ R20
Putting the R7 3800XT against the R7 3800X, we can see that the R7 3800XT takes the cake when overclocked. In our Cinebench R20 single-core testing, the overclocked R7 3800XT@ 4.5 Ghz achieved a score of 537 while in our multi-core testing, it achieved a score of 5371.
In stock setting, the R5 3600XT fare much worse against its X series counterpart. It is only in its overclocked form that it shines its brightest.
CPU PhotoWorxx, CPU Zilb, CPU AES and CPU SHA3 benchmark scores
- CPU PhotoWorxx tests the CPU’s digital photo processing performance.
- CPU ZLib test combined CPU and memory subsystem performance through the public ZLib compression library Version 1.2.5.
- CPU AES tests the CPU performance via AES data encryption.
- CPU SHA3 tests the CPU performance via the Secure Hash Algorithm 3.
Only in our CPU AES benchmark, we can see the Ryzen 7 3800XT pulling ahead in its overclocked state. If not, both of them are pretty much neck and neck in terms of scores.
The same situation appears when we compared the R5 3600XT to its X counterpart. The overclocked XT variant stays ahead of the pack in our CPU AES testing.
FPU SinJulia, FP64 Ray-Trace and FP32 Ray-Trace benchmark scores
- FPU SinJulia tests the CPU’s extended precision floating point performance.
- FP64 Ray-Trace tests the CPU’s double-precision (also known as 64-bit) floating-point performance through the computation of a scene with a SIMD-enhanced ray tracing engine.
- FP32 Ray-Trace tests the CPU’s single-precision (also known as 32-bit) floating-point performance through the computation of a scene with a SIMD-enhanced ray tracing engine.
In FPU SinJulia, the overclocked R7 3800XT takes the lead. However, both overclocked CPUs could not run the FP 64 and FP 32 Ray-Trace benchmark.
3DMark Time Spy CPU benchmark scores
▲This is where the overclocked R5 3600XT truly shines – netting a substantial score increase over its stock settings.
CPU temperature and power consumption
For our testing, both CPU go through 30 minutes AIDA64 stress test session. Then, we obtain the temperature measurement via AIDA64 CPU DIE. The core voltage for both overclocked CPU reaches 1.4V.
When going against the Intel i9-10900K in Cinebench R15/R20, the R93900XT is pretty much neck in neck in single-core performance but leaps forward when it comes to multi-core performance.
The new Ryzen 9 3900XT, Ryzen 7 3800XT and Ryzen 5 3600XT processors can all effortlessly achieve 4.5~4.6 GHz on all cores via manual overclocking. This is all thanks to the refined 7nm process.
What surprises us was that our R5 3600XT sample was able to overclock to 4.7Ghz@ 1.45V and it was still able to boot up into Windows.
Do we recommend these new Ryzen 3000XT series CPUs? It depends on the user scenario since the are quite pricey. Some people have gotten nicely binned R5 3600. The X series will probably also be getting a price drop in the coming days. If you are building a new system today and want to have a hassle-free overclocking experience, then the XT series is for you.
We will be following up this review with our gaming benchmark roundup shortly, so stay tuned!
English ver. Editor XMA