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GPU Comparison
NVIDIA GeForce GT 640 vs AMD Radeon R9 270X
NVIDIA GeForce GT 640 vs AMD Radeon R9 270X
VS
NVIDIA GeForce GT 640
AMD Radeon R9 270X
We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 2GB VRAM Radeon R9 270X 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 180W)
AMD Radeon R9 270X 's Advantages
Released 1 years and 4 months late
Boost Clock1050MHz
Larger VRAM bandwidth (179.2GB/s vs 28.51GB/s)
896 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce GT 640
0.693 TFLOPS
Radeon R9 270X
+287%
2.688 TFLOPS
GeForce GT 640
VS
Radeon R9 270X
Graphics Card
Jun 2012
Release Date
Oct 2013
GeForce 600
Generation
Volcanic Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
1000 MHz
-
Boost Clock
1050 MHz
891 MHz
Memory Clock
1400 MHz
Memory
2GB
Memory Size
2GB
DDR3
Memory Type
GDDR5
128bit
Memory Bus
256bit
28.51GB/s
Bandwidth
179.2GB/s
Render Config
-
Compute Units
20
-
-
-
384
Shading Units
1280
32
TMUs
80
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
33.60 GPixel/s
28.86 GTexel/s
Texture Rate
84.00 GTexel/s
-
-
-
692.7 GFLOPS
FP32 (float)
2.688 TFLOPS
28.86 GFLOPS
FP64 (double)
168.0 GFLOPS
Board Design
65W
TDP
180W
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
2x 6-pin
Graphics Processor
GK107
GPU Name
Curacao
GK107-300-A2
GPU Variant
Curacao XT (215-0848004)
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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