AMD Radeon RX 640 vs NVIDIA GeForce GTX 645 OEM

Comparative analysis of AMD Radeon RX 640 and NVIDIA GeForce GTX 645 OEM videocards for all known characteristics in the following categories: Essentials, Technical info, Video outputs and ports, Compatibility, dimensions and requirements, API support, Memory, Technologies. Benchmark videocards performance analysis: GFXBench 4.0 - Manhattan (Frames), GFXBench 4.0 - Manhattan (Fps), GFXBench 4.0 - T-Rex (Frames), GFXBench 4.0 - T-Rex (Fps), GFXBench 4.0 - Car Chase Offscreen (Frames), GFXBench 4.0 - Car Chase Offscreen (Fps), Geekbench - OpenCL, PassMark - G2D Mark, PassMark - G3D Mark, 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).

AMD Radeon RX 640

NVIDIA GeForce GTX 645 OEM

Differences

Reasons to consider the AMD Radeon RX 640

Videocard is newer: launch date 6 year(s) 0 month(s) later
Around 31% higher core clock speed: 1082 MHz vs 824 MHz
985.6x more texture fill rate: 38.98 GTexel/s vs 39.55 GTexel / s
A newer manufacturing process allows for a more powerful, yet cooler running videocard: 14 nm vs 28 nm
Around 30% lower typical power consumption: 50 Watt vs 65 Watt
2x more maximum memory size: 2 GB vs 1 GB
2.3x better performance in GFXBench 4.0 - Car Chase Offscreen (Frames): 3278 vs 1435
2.3x better performance in GFXBench 4.0 - Car Chase Offscreen (Fps): 3278 vs 1435
2.2x better performance in Geekbench - OpenCL: 11683 vs 5202
Around 14% better performance in PassMark - G3D Mark: 2142 vs 1883

Specifications (specs)
Launch date	13 May 2019 vs 22 April 2013
Core clock speed	1082 MHz vs 824 MHz
Texture fill rate	38.98 GTexel/s vs 39.55 GTexel / s
Manufacturing process technology	14 nm vs 28 nm
Thermal Design Power (TDP)	50 Watt vs 65 Watt
Maximum memory size	2 GB vs 1 GB
Benchmarks
GFXBench 4.0 - Car Chase Offscreen (Frames)	3278 vs 1435
GFXBench 4.0 - Car Chase Offscreen (Fps)	3278 vs 1435
Geekbench - OpenCL	11683 vs 5202
PassMark - G3D Mark	2142 vs 1883

Reasons to consider the NVIDIA GeForce GTX 645 OEM

Around 13% higher pipelines: 576 vs 512
2.3x more memory clock speed: 4000 MHz vs 1750 MHz (7000 MHz effective)
2x better performance in GFXBench 4.0 - Manhattan (Frames): 3531 vs 1769
2x better performance in GFXBench 4.0 - Manhattan (Fps): 3531 vs 1769
Around 19% better performance in GFXBench 4.0 - T-Rex (Frames): 3300 vs 2775
Around 19% better performance in GFXBench 4.0 - T-Rex (Fps): 3300 vs 2775
Around 22% better performance in PassMark - G2D Mark: 428 vs 352

Specifications (specs)
Pipelines	576 vs 512
Memory clock speed	4000 MHz vs 1750 MHz (7000 MHz effective)
Benchmarks
GFXBench 4.0 - Manhattan (Frames)	3531 vs 1769
GFXBench 4.0 - Manhattan (Fps)	3531 vs 1769
GFXBench 4.0 - T-Rex (Frames)	3300 vs 2775
GFXBench 4.0 - T-Rex (Fps)	3300 vs 2775
PassMark - G2D Mark	428 vs 352

Compare benchmarks

GPU 1: AMD Radeon RX 640
GPU 2: NVIDIA GeForce GTX 645 OEM

GFXBench 4.0 - Manhattan (Frames)

GPU 1

GPU 2

1769

3531

GFXBench 4.0 - Manhattan (Fps)

GPU 1

GPU 2

1769

3531

GFXBench 4.0 - T-Rex (Frames)

GPU 1

GPU 2

2775

3300

GFXBench 4.0 - T-Rex (Fps)

GPU 1

GPU 2

2775

3300

GFXBench 4.0 - Car Chase Offscreen (Frames)

GPU 1

GPU 2

3278

1435

GFXBench 4.0 - Car Chase Offscreen (Fps)

GPU 1

GPU 2

3278

1435

Geekbench - OpenCL

GPU 1

GPU 2

11683

5202

PassMark - G2D Mark

GPU 1

GPU 2

352

428

PassMark - G3D Mark

GPU 1

GPU 2

2142

1883

Name	AMD Radeon RX 640	NVIDIA GeForce GTX 645 OEM
GFXBench 4.0 - Manhattan (Frames)	1769	3531
GFXBench 4.0 - Manhattan (Fps)	1769	3531
GFXBench 4.0 - T-Rex (Frames)	2775	3300
GFXBench 4.0 - T-Rex (Fps)	2775	3300
GFXBench 4.0 - Car Chase Offscreen (Frames)	3278	1435
GFXBench 4.0 - Car Chase Offscreen (Fps)	3278	1435
Geekbench - OpenCL	11683	5202
PassMark - G2D Mark	352	428
PassMark - G3D Mark	2142	1883
CompuBench 1.5 Desktop - Face Detection (mPixels/s)		13.806
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)		546.51
CompuBench 1.5 Desktop - T-Rex (Frames/s)		1.535
CompuBench 1.5 Desktop - Video Composition (Frames/s)		27.524
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)		38.664

Compare specifications (specs)

	AMD Radeon RX 640	NVIDIA GeForce GTX 645 OEM
Essentials
Architecture	GCN 4.0	Kepler
Code name	Arctic Islands	GK106
Launch date	13 May 2019	22 April 2013
Place in performance rating	794	968
Type		Desktop
Technical info
Boost clock speed	1218 MHz
Compute units	8
Core clock speed	1082 MHz	824 MHz
Manufacturing process technology	14 nm	28 nm
Peak Double Precision (FP64) Performance	77.95 GFLOPS
Peak Half Precision (FP16) Performance	1247 GFLOPS
Peak Single Precision (FP32) Performance	1247 GFLOPS
Pipelines	512	576
Pixel fill rate	19.49 GPixel/s
Texture fill rate	38.98 GTexel/s	39.55 GTexel / s
Thermal Design Power (TDP)	50 Watt	65 Watt
Transistor count	2200 million	2,540 million
Floating-point performance		949.2 gflops
Video outputs and ports
Display Connectors	1x DVI, 1x HDMI, 1x DisplayPort	1x DVI, 1x HDMI, 1x DisplayPort
DisplayPort support
HDMI
Compatibility, dimensions and requirements
Interface	PCIe 3.0 x8	PCIe 3.0 x16
Length	5.7 inches (145 mm)	147 mm
Recommended system power (PSU)	350 Watt
Supplementary power connectors	None	None
Width	Dual-slot
API support
DirectX	12	12.0 (11_0)
OpenCL	2.0
OpenGL	4.6	4.6
Shader Model	6.4
Vulkan
Memory
Maximum RAM amount	2 GB	1 GB
Memory bandwidth	112.0 GB/s	64 GB / s
Memory bus width	128 bit	128 Bit
Memory clock speed	1750 MHz (7000 MHz effective)	4000 MHz
Memory type	GDDR5	GDDR5
Technologies
Unified Video Decoder (UVD)
Video Code Engine (VCE)