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GPU Comparison
NVIDIA GeForce GT 640 vs AMD Radeon R9 270 1024SP
NVIDIA GeForce GT 640 vs AMD Radeon R9 270 1024SP
VS
NVIDIA GeForce GT 640
AMD Radeon R9 270 1024SP
We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 2GB VRAM Radeon R9 270 1024SP to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GT 640 's Advantages
Lower TDP (65W vs 150W)
AMD Radeon R9 270 1024SP 's Advantages
Released 2 years and 9 months late
Boost Clock925MHz
Larger VRAM bandwidth (153.6GB/s vs 28.51GB/s)
640 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce GT 640
0.693 TFLOPS
Radeon R9 270 1024SP
+173%
1.894 TFLOPS
GeForce GT 640
VS
Radeon R9 270 1024SP
Graphics Card
Jun 2012
Release Date
Mar 2015
GeForce 600
Generation
Volcanic Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
900 MHz
-
Boost Clock
925 MHz
891 MHz
Memory Clock
1200 MHz
Memory
2GB
Memory Size
2GB
DDR3
Memory Type
GDDR5
128bit
Memory Bus
256bit
28.51GB/s
Bandwidth
153.6GB/s
Render Config
-
Compute Units
16
-
-
-
384
Shading Units
1024
32
TMUs
64
16
ROPs
32
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
16 KB (per CU)
256 KB
L2 Cache
512 KB
-
-
-
Theoretical Performance
7.216 GPixel/s
Pixel Rate
29.60 GPixel/s
28.86 GTexel/s
Texture Rate
59.20 GTexel/s
-
-
-
692.7 GFLOPS
FP32 (float)
1.894 TFLOPS
28.86 GFLOPS
FP64 (double)
118.4 GFLOPS
Board Design
65W
TDP
150W
250 W
Suggested PSU
450 W
1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
Outputs
2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
None
Power Connectors
1x 6-pin
Graphics Processor
GK107
GPU Name
Pitcairn
GK107-300-A2
GPU Variant
Pitcairn PRO (215-0828062)
Kepler
Architecture
GCN 1.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
1.27 billion
Transistors
2.8 billion
118 mm²
Die Size
212 mm²
Graphics Features
12 (11_0)
DirectX
12 (11_1)
4.6
OpenGL
4.6
3.0
OpenCL
1.2
1.1
Vulkan
1.2
3.0
CUDA
-
5.1
Shader Model
5.1
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