Radeon R9 295X2 vs GeForce GT 640
We compared two Desktop platform GPUs: 4GB VRAM Radeon R9 295X2 and 2GB VRAM GeForce GT 640 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon R9 295X2 's Advantages
Released 1 years and 10 months late
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (320.0GB/s vs 28.51GB/s)
2432 additional rendering cores
GeForce GT 640 's Advantages
Lower TDP (65W vs 500W)
Score
Benchmark
FP32 (float)
Radeon R9 295X2
+727%
5733
GeForce GT 640
693
Graphics Card
Apr 2014
Release Date
Jun 2012
Volcanic Islands
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
1250 MHz
Memory Clock
891 MHz
Memory
4GB
Memory Size
2GB
GDDR5
Memory Type
DDR3
512bit
Memory Bus
128bit
320.0GB/s
Bandwidth
28.51GB/s
Render Config
44
Compute Units
-
2816
Shading Units
384
176
TMUs
32
64
ROPs
16
16 KB (per CU)
L1 Cache
16 KB (per SMX)
1024 KB
L2 Cache
256 KB
Theoretical Performance
65.15 GPixel/s
Pixel Rate
7.216 GPixel/s
179.2 GTexel/s
Texture Rate
28.86 GTexel/s
5.733 TFLOPS
FP32 (float)
692.7 GFLOPS
716.7 GFLOPS
FP64 (double)
28.86 GFLOPS
Board Design
500W
TDP
65W
900 W
Suggested PSU
250 W
1x DVI
4x mini-DisplayPort 1.2
Outputs
1x DVI
1x HDMI 1.4a
1x DisplayPort 1.2
2x 8-pin
Power Connectors
None
Graphics Processor
Vesuvius
GPU Name
GK107
Vesuvius XT
(215-0852022)
GPU Variant
GK107-300-A2
GCN 2.0
Architecture
Kepler
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
6.2 billion
Transistors
1.27 billion
438 mm²
Die Size
118 mm²
Graphics Features
12 (12_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
2.0
OpenCL
3.0
1.2
Vulkan
1.1
-
CUDA
3.0
6.3
Shader Model
5.1