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AMD Ryzen 9 3900 vs AMD Ryzen 9 7900

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AMD Ryzen 9 3900

The AMD Ryzen 9 3900 operates with 12 cores and 24 CPU threads. It run at 4.30 GHz base -- all cores while the TDP is set at 65 W.The processor is attached to the AM4 (LGA 1331) CPU socket. This version includes 64.00 MB of L3 cache on one chip, supports 2 memory channels to support DDR4-3200 RAM and features 4.0 PCIe Gen 20 lanes. Tjunction keeps below 95 °C degrees C. In particular, Matisse (Zen 2) Architecture is enhanced with 7 nm technology and supports AMD-V, SVM. The product was launched on Q3/2019

AMD Ryzen 9 7900

The AMD Ryzen 9 7900 operates with 124 cores and 24 CPU threads. It run at 5.40 GHz base all cores while the TDP is set at 45 W.The processor is attached to the AM5 (LGA 1718) CPU socket. This version includes 64.00 MB of L3 cache on one chip, supports 2 (Dual Channel) memory channels to support DDR5-5200 RAM and features PCIe Gen lanes. Tjunction keeps below 95 °C degrees C. In particular, Raphael (Zen 4) Architecture is enhanced with 5 nm technology and supports AMD-V, SVM. The product was launched on Q1/2023

AMD Ryzen 9 3900

AMD Ryzen 9 7900

AMD Ryzen 9 3900

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AMD Ryzen 9 7900

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Compare Detail

3.10 GHz	Frequency	3.70 GHz
12	Cores	124
4.30 GHz	Turbo (1 Core)	5.40 GHz
--	Turbo (All Cores)
Yes	Hyperthreading	Yes
Yes	Overclocking	Yes
normal	Core Architecture	normal
no iGPU	GPU	AMD Radeon Graphics (Raphael)
No turbo	GPU (Turbo)	2.20 GHz
7 nm	Technology	5 nm
No turbo	GPU (Turbo)	2.20 GHz
	DirectX Version
	Max. displays	3
DDR4-3200	Memory	DDR5-5200
2	Memory channels	2 (Dual Channel)
	Max memory
No	ECC	Yes
--	L2 Cache	12.00 MB
64.00 MB	L3 Cache	64.00 MB
4.0	PCIe version
20	PCIe lanes
7 nm	Technology	5 nm
AM4 (LGA 1331)	Socket	AM5 (LGA 1718)
65 W	TDP
AMD-V, SVM	Virtualization	AMD-V, SVM
Q3/2019	Release date	Q1/2023
Show more data		Show more data

Cinebench R23 (Single-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.

AMD Ryzen 9 3900 1,288 (58%)

AMD Ryzen 9 7900 1,974 (85%)

Cinebench R23 (Multi-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.

AMD Ryzen 9 3900 16,559 (25%)

AMD Ryzen 9 7900 28,911 (44%)

Cinebench R20 (Single-Core)

Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.

AMD Ryzen 9 3900 (0%)

AMD Ryzen 9 7900 774 (85%)

Cinebench R20 (Multi-Core)

Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.

AMD Ryzen 9 3900 (0%)

AMD Ryzen 9 7900 11,094 (44%)

Cinebench R15 (Single-Core)

Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.

AMD Ryzen 9 3900 (0%)

AMD Ryzen 9 7900 325 (93%)

Cinebench R15 (Multi-Core)

Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.

AMD Ryzen 9 3900 (0%)

AMD Ryzen 9 7900 4,802 (45%)

Geekbench 5, 64bit (Single-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.

AMD Ryzen 9 3900 1,201 (53%)

AMD Ryzen 9 7900 2,217 (98%)

Geekbench 5, 64bit (Multi-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.

AMD Ryzen 9 3900 10,978 (22%)

AMD Ryzen 9 7900 20,515 (30%)

iGPU - FP32 Performance (Single-precision GFLOPS)

The theoretical computing performance of the internal graphics unit of the processor with simple accuracy (32 bit) in GFLOPS. GFLOPS indicates how many billion floating point operations the iGPU can perform per second.

AMD Ryzen 9 3900 (0%)

AMD Ryzen 9 7900 564 (2%)

Geekbench 3, 64bit (Single-Core)

Geekbench 3 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.

AMD Ryzen 9 3900 6,931 (100%)

AMD Ryzen 9 7900 (0%)

Geekbench 3, 64bit (Multi-Core)

Geekbench 3 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.

AMD Ryzen 9 3900 77,296 (81%)

AMD Ryzen 9 7900 (0%)

Estimated results for PassMark CPU Mark

Some of the CPUs listed below have been benchmarked by CPU-Comparison. However the majority of CPUs have not been tested and the results have been estimated by a CPU-Comparison’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.

AMD Ryzen 9 3900 30,928 (29%)

AMD Ryzen 9 7900 (0%)

Monero Hashrate kH/s

The crypto currency Monero has been using the RandomX algorithm since November 2019. This PoW (proof of work) algorithm can only efficiently be calculated using a processor (CPU) or a graphics card (GPU). The CryptoNight algorithm was used for Monero until November 2019, but it could be calculated using ASICs. RandomX benefits from a high number of CPU cores, cache and a fast connection of the memory via as many memory channels as possible

AMD Ryzen 9 3900 16 (14%)

AMD Ryzen 9 7900 (0%)

Electric Usage Estimate

Average hours of use per day

Average CPU Utilization (0-100%)

Power cost, dollar per kWh

Electric Usage Estimate

Average hours of use per day

Average CPU Utilization (0-100%)

Power cost, dollar per kWh

AMD Ryzen 9 3900		AMD Ryzen 9 7900
65 W	Max TDP	0
NA	Power consumption per day (kWh)	NA
NA	Running cost per day	NA
NA	Power consumption per year (kWh)	NA
NA	Running cost per year	NA