AMD Radeon RX 6400 vs NVIDIA GeForce GT 640 OEM

Comparative analysis of AMD Radeon RX 6400 and NVIDIA GeForce GT 640 OEM videocards for all known characteristics in the following categories: Essentials, Technical info, Video outputs and ports, Compatibility, dimensions and requirements, API support, Memory. Benchmark videocards performance analysis: PassMark - G2D Mark, PassMark - G3D Mark, 3DMark Fire Strike - Graphics Score, Geekbench - OpenCL, CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s), CompuBench 1.5 Desktop - T-Rex (Frames/s), CompuBench 1.5 Desktop - Video Composition (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s), GFXBench 4.0 - Car Chase Offscreen (Frames), GFXBench 4.0 - Manhattan (Frames), GFXBench 4.0 - T-Rex (Frames), GFXBench 4.0 - Car Chase Offscreen (Fps), GFXBench 4.0 - Manhattan (Fps), GFXBench 4.0 - T-Rex (Fps).

AMD Radeon RX 6400

NVIDIA GeForce GT 640 OEM

Differences

Reasons to consider the AMD Radeon RX 6400

Videocard is newer: launch date 9 year(s) 8 month(s) later
2.4x more core clock speed: 1923 MHz vs 797 MHz
4368.6x more texture fill rate: 111.4 GTexel/s vs 25.5 GTexel / s
2x more pipelines: 768 vs 384
A newer manufacturing process allows for a more powerful, yet cooler running videocard: 6 nm vs 28 nm
2x more maximum memory size: 4 GB vs 2 GB
Around 12% higher memory clock speed: 2000 MHz, 16 Gbps effective vs 1782 MHz

Launch date	19 Jan 2022 vs 24 April 2012
Core clock speed	1923 MHz vs 797 MHz
Texture fill rate	111.4 GTexel/s vs 25.5 GTexel / s
Pipelines	768 vs 384
Manufacturing process technology	6 nm vs 28 nm
Maximum memory size	4 GB vs 2 GB
Memory clock speed	2000 MHz, 16 Gbps effective vs 1782 MHz

Reasons to consider the NVIDIA GeForce GT 640 OEM

Around 6% lower typical power consumption: 50 Watt vs 53 Watt

Thermal Design Power (TDP)	50 Watt vs 53 Watt

Compare benchmarks

GPU 1: AMD Radeon RX 6400
GPU 2: NVIDIA GeForce GT 640 OEM

Name	AMD Radeon RX 6400	NVIDIA GeForce GT 640 OEM
PassMark - G2D Mark	717
PassMark - G3D Mark	7651
3DMark Fire Strike - Graphics Score	176
Geekbench - OpenCL	33004
CompuBench 1.5 Desktop - Face Detection (mPixels/s)		9.932
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)		254.345
CompuBench 1.5 Desktop - T-Rex (Frames/s)		1.14
CompuBench 1.5 Desktop - Video Composition (Frames/s)		13.613
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)		15.32
GFXBench 4.0 - Car Chase Offscreen (Frames)		1502
GFXBench 4.0 - Manhattan (Frames)		2167
GFXBench 4.0 - T-Rex (Frames)		3334
GFXBench 4.0 - Car Chase Offscreen (Fps)		1502
GFXBench 4.0 - Manhattan (Fps)		2167
GFXBench 4.0 - T-Rex (Fps)		3334

Compare specifications (specs)

	AMD Radeon RX 6400	NVIDIA GeForce GT 640 OEM
Essentials
Architecture	RDNA 2.0	Kepler
Code name	Navi 24	GK107
Launch date	19 Jan 2022	24 April 2012
Place in performance rating	279	1368
Type		Desktop
Technical info
Boost clock speed	2321 MHz
Compute units	12
Core clock speed	1923 MHz	797 MHz
Manufacturing process technology	6 nm	28 nm
Peak Double Precision (FP64) Performance	222.8 GFLOPS (1:16)
Peak Half Precision (FP16) Performance	7.130 TFLOPS (2:1)
Peak Single Precision (FP32) Performance	3.565 TFLOPS
Pipelines	768	384
Pixel fill rate	74.27 GPixel/s
Texture fill rate	111.4 GTexel/s	25.5 GTexel / s
Thermal Design Power (TDP)	53 Watt	50 Watt
Transistor count	5400 million	1,270 million
Floating-point performance		612.1 gflops
Video outputs and ports
Display Connectors	1x HDMI 2.1, 1x DisplayPort 1.4a	1x DVI, 1x HDMI, 1x DisplayPort
Compatibility, dimensions and requirements
Form factor	Single-slot
Interface	PCIe 4.0 x4	PCIe 3.0 x16
Recommended system power (PSU)	250 Watt
Supplementary power connectors	None	None
Length		145 mm
API support
DirectX	12 Ultimate (12_2)	12.0 (11_0)
OpenCL	2.2
OpenGL	4.6	4.6
Shader Model	6.7
Vulkan
Memory
Maximum RAM amount	4 GB	2 GB
Memory bandwidth	128.0 GB/s	28.51 GB / s
Memory bus width	64 bit	128 Bit
Memory clock speed	2000 MHz, 16 Gbps effective	1782 MHz
Memory type	GDDR6	DDR3