AMD Radeon R5 M255 vs NVIDIA GeForce GT 640 OEM

Comparative analysis of AMD Radeon R5 M255 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, Technologies. Benchmark videocards performance analysis: PassMark - G3D Mark, PassMark - G2D Mark, 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).

 

Differences

Reasons to consider the AMD Radeon R5 M255

  • Videocard is newer: launch date 2 year(s) 5 month(s) later
  • Around 16% higher core clock speed: 925 MHz vs 797 MHz
  • Around 18% better floating-point performance: 721.9 gflops vs 612.1 gflops
  • 2x more maximum memory size: 4 GB vs 2 GB
  • Around 44% better performance in CompuBench 1.5 Desktop - Face Detection (mPixels/s): 14.288 vs 9.932
  • Around 48% better performance in CompuBench 1.5 Desktop - Video Composition (Frames/s): 20.164 vs 13.613
  • 4.3x better performance in CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s): 66.631 vs 15.32
  • Around 1% better performance in GFXBench 4.0 - T-Rex (Frames): 3357 vs 3334
  • Around 1% better performance in GFXBench 4.0 - T-Rex (Fps): 3357 vs 3334
Specifications (specs)
Launch date 12 October 2014 vs 24 April 2012
Core clock speed 925 MHz vs 797 MHz
Floating-point performance 721.9 gflops vs 612.1 gflops
Maximum memory size 4 GB vs 2 GB
Benchmarks
CompuBench 1.5 Desktop - Face Detection (mPixels/s) 14.288 vs 9.932
CompuBench 1.5 Desktop - Video Composition (Frames/s) 20.164 vs 13.613
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s) 66.631 vs 15.32
GFXBench 4.0 - T-Rex (Frames) 3357 vs 3334
GFXBench 4.0 - T-Rex (Fps) 3357 vs 3334

Reasons to consider the NVIDIA GeForce GT 640 OEM

  • Around 13% higher texture fill rate: 25.5 GTexel / s vs 22.56 GTexel / s
  • Around 20% higher pipelines: 384 vs 320
  • Around 78% higher memory clock speed: 1782 MHz vs 1000 MHz
  • Around 53% better performance in CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s): 254.345 vs 166.596
  • Around 15% better performance in CompuBench 1.5 Desktop - T-Rex (Frames/s): 1.14 vs 0.988
  • Around 3% better performance in GFXBench 4.0 - Car Chase Offscreen (Frames): 1502 vs 1459
  • Around 26% better performance in GFXBench 4.0 - Manhattan (Frames): 2167 vs 1715
  • Around 3% better performance in GFXBench 4.0 - Car Chase Offscreen (Fps): 1502 vs 1459
  • Around 26% better performance in GFXBench 4.0 - Manhattan (Fps): 2167 vs 1715
Specifications (specs)
Texture fill rate 25.5 GTexel / s vs 22.56 GTexel / s
Pipelines 384 vs 320
Memory clock speed 1782 MHz vs 1000 MHz
Benchmarks
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s) 254.345 vs 166.596
CompuBench 1.5 Desktop - T-Rex (Frames/s) 1.14 vs 0.988
GFXBench 4.0 - Car Chase Offscreen (Frames) 1502 vs 1459
GFXBench 4.0 - Manhattan (Frames) 2167 vs 1715
GFXBench 4.0 - Car Chase Offscreen (Fps) 1502 vs 1459
GFXBench 4.0 - Manhattan (Fps) 2167 vs 1715

Compare benchmarks

GPU 1: AMD Radeon R5 M255
GPU 2: NVIDIA GeForce GT 640 OEM

CompuBench 1.5 Desktop - Face Detection (mPixels/s)
GPU 1
GPU 2
14.288
9.932
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)
GPU 1
GPU 2
166.596
254.345
CompuBench 1.5 Desktop - T-Rex (Frames/s)
GPU 1
GPU 2
0.988
1.14
CompuBench 1.5 Desktop - Video Composition (Frames/s)
GPU 1
GPU 2
20.164
13.613
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)
GPU 1
GPU 2
66.631
15.32
GFXBench 4.0 - Car Chase Offscreen (Frames)
GPU 1
GPU 2
1459
1502
GFXBench 4.0 - Manhattan (Frames)
GPU 1
GPU 2
1715
2167
GFXBench 4.0 - T-Rex (Frames)
GPU 1
GPU 2
3357
3334
GFXBench 4.0 - Car Chase Offscreen (Fps)
GPU 1
GPU 2
1459
1502
GFXBench 4.0 - Manhattan (Fps)
GPU 1
GPU 2
1715
2167
GFXBench 4.0 - T-Rex (Fps)
GPU 1
GPU 2
3357
3334
Name AMD Radeon R5 M255 NVIDIA GeForce GT 640 OEM
PassMark - G3D Mark 541
PassMark - G2D Mark 133
Geekbench - OpenCL 4720
CompuBench 1.5 Desktop - Face Detection (mPixels/s) 14.288 9.932
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s) 166.596 254.345
CompuBench 1.5 Desktop - T-Rex (Frames/s) 0.988 1.14
CompuBench 1.5 Desktop - Video Composition (Frames/s) 20.164 13.613
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s) 66.631 15.32
GFXBench 4.0 - Car Chase Offscreen (Frames) 1459 1502
GFXBench 4.0 - Manhattan (Frames) 1715 2167
GFXBench 4.0 - T-Rex (Frames) 3357 3334
GFXBench 4.0 - Car Chase Offscreen (Fps) 1459 1502
GFXBench 4.0 - Manhattan (Fps) 1715 2167
GFXBench 4.0 - T-Rex (Fps) 3357 3334

Compare specifications (specs)

AMD Radeon R5 M255 NVIDIA GeForce GT 640 OEM

Essentials

Architecture GCN 3.0 Kepler
Code name Topaz GK107
Design AMD Radeon R5 200 Series
Launch date 12 October 2014 24 April 2012
Place in performance rating 1365 1368
Type Desktop Desktop

Technical info

Boost clock speed 940 MHz
Compute units 5
Core clock speed 925 MHz 797 MHz
Floating-point performance 721.9 gflops 612.1 gflops
Manufacturing process technology 28 nm 28 nm
Pipelines 320 384
Texture fill rate 22.56 GTexel / s 25.5 GTexel / s
Transistor count 3,100 million 1,270 million
Thermal Design Power (TDP) 50 Watt

Video outputs and ports

Display Connectors No outputs 1x DVI, 1x HDMI, 1x DisplayPort

Compatibility, dimensions and requirements

Bus support PCIe 3.0 x8
Interface PCIe 3.0 x8 PCIe 3.0 x16
Length 145 mm
Supplementary power connectors None

API support

DirectX 11 12.0 (11_0)
Mantle
OpenCL Not Listed
OpenGL 4.4 4.6

Memory

Maximum RAM amount 4 GB 2 GB
Memory bandwidth 16 GB/s 28.51 GB / s
Memory bus width 64 bit 128 Bit
Memory clock speed 1000 MHz 1782 MHz
Memory type DDR3 DDR3
Shared memory 0

Technologies

AMD Eyefinity
AppAcceleration
DualGraphics
Enduro
HD3D
Powerplay
PowerTune
Switchable graphics
ZeroCore