AMD Ryzen 9 3900XT and Ryzen 7 3800XT CPU Review

1. Ryzen 9 3900XT & Ryzen 7 3800XT: Zen 2 Boosted2. All-Core and Boost Operating Frequencies3. Manual Overclocking - 4.6GHz Achieved!4. Testing Methodology5. CPU Tests: Cinebench R20 & Blender6. CPU Tests: 7-Zip Decompression & Compression7. CPU Tests: Handbrake H264 & H2658. Memory Tests: Memory Bandwidth and Latency9. Gaming: Red Dead Redemption 210. Gaming: Shadow of the Tomb Raider11. Gaming: The Division 212. Technical: Power Draw, Efficiency, Temperatures13. Value: Cinebench Performance per £14. Closing Thoughts15. View All Pages

We will be outlining the AMD Ryzen 7 3800XT and Ryzen 9 3900XT CPUs' performance while using the ASUS ROG STRIX X570-E Gaming motherboard and with additional test data and validation from the MSI B550 Tomahawk. A 32GB (2x16GB) kit of 3600MHz CL16 DDR4 memory serves our test system.

Today's comparison processors come in the form of:

• Comet Lake Core i7-10700K (8C16T) and Core i9-10900K (10C20T).
• Matisse ‘Zen 2' Ryzen 7 3700X (8C16T), Ryzen 7 3800X (8C16T), Ryzen 9 3900X (12C24T), and Ryzen 9 3950X (16C32T).

Each processor is tested at its default out-of-the-box settings. For the Intel CPUs, unlimited turbo duration as set by the motherboard with XMP enabled is the operating mode. All-core load frequencies for the tested chips are as follows:

• Core i7-10700K = 4.7GHz.
• Core i9-10900K = 4.9GHz.
• Ryzen 7 3700X = around 4.05GHz.
• Ryzen 7 3800X = around 4.125GHz.
• Ryzen 9 3900X = around 4.05GHz.
• Ryzen 9 3950X = around 3.875GHz.
• Ryzen 7 3800XT = around 4.225GHz.
• Ryzen 9 3900XT = around 4.05GHz.

CPU Test System Components:

• Graphics Card: Gigabyte Aorus RTX 2080 Ti XTREME (custom fan curve to minimise thermal throttling).
• Memory: 32GB (2x16GB) Corsair Vengeance LPX 3600MHz 16-18-18-36 DDR4 @ 1.35V.
• CPU Cooler: Fractal Celsius+ S28 Prisma 280mm AIO at full pump and fan speed
• OS SSD: WD_Black SN750 NVMe SSD.
• Games SSD: Aorus 2TB PCIe Gen 4 M.2 SSD.
• Power Supply: Seasonic Prime TX-1000.
• Chassis: Lian Li T60 Open Air Test Bench.
• Operating System: Windows 10 Pro 64-bit.

• AM4 Motherboards: ASUS ROG STRIX X570-E Gaming & MSI B550 Tomahawk.
• Z490 Motherboard: MSI MEG Z490 ACE.

Tests:

Productivity-related:

• Cinebench R20 – All-core & single-core CPU benchmark (CPU)
• Blender 2.82a – All-core rendering of the Classroom benchmark (CPU)
• HandBrake H264 – Convert 1440p60 H264 video to 1080p60 H264 using the YouTube HQ 1080p60 preset (CPU)
• HandBrake H265 – Convert 4K30 100Mbps H264 video to 1080p30 40Mbps H265 using the H.265 MKV 1080p30 preset (CPU & Memory)
• 7-Zip – Built-in 7-Zip benchmark test (CPU & Memory)
• SiSoft Sandra – Memory bandwidth and Cache & Memory Latency Test (Memory)
• AIDA64 – Memory bandwidth & memory latency (Memory)

Gaming-related:

• Red Dead Redemption 2 – 1920×1080 & 2560×1440, High settings manually applied, DX12 (Gaming)
• Shadow of the Tomb Raider – 1920×1080 & 2560 x 1440, Highest quality preset, no AA, DX12 version (Gaming)
• The Division 2 – 1920×1080 & 2560×1440, Ultra quality preset, no AA, DX12 version (Gaming)

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