NVIDIA GeForce GT 640 OEM Rebrand vs AMD Radeon HD 7670 OEM
We compared two Desktop platform GPUs: 1536MB VRAM GeForce GT 640 OEM Rebrand and 512MB VRAM Radeon HD 7670 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GT 640 OEM Rebrand 's Advantages
More VRAM (1536GB vs 512GB)
AMD Radeon HD 7670 OEM 's Advantages
Larger VRAM bandwidth (64.00GB/s vs 38.40GB/s)
336 additional rendering cores
Lower TDP (66W vs 75W)
Score
Benchmark
FP32 (float)
GeForce GT 640 OEM Rebrand
0.415 TFLOPS
Radeon HD 7670 OEM
+85%
0.768 TFLOPS
Graphics Card
Apr 2012
Release Date
Jan 2012
GeForce 600
Generation
Southern Islands
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
-
-
-
-
-
800 MHz
Memory Clock
1000 MHz
Memory
1536MB
Memory Size
512MB
DDR3
Memory Type
GDDR5
192bit
Memory Bus
128bit
38.40GB/s
Bandwidth
64.00GB/s
Render Config
-
Compute Units
6
3
SM Count
-
144
Shading Units
480
24
TMUs
24
24
ROPs
8
-
-
-
-
-
-
64 KB (per SM)
L1 Cache
8 KB (per CU)
384 KB
L2 Cache
256 KB
-
-
-
Theoretical Performance
4.320 GPixel/s
Pixel Rate
6.400 GPixel/s
17.28 GTexel/s
Texture Rate
19.20 GTexel/s
-
-
-
414.7 GFLOPS
FP32 (float)
768.0 GFLOPS
34.56 GFLOPS
FP64 (double)
-
Board Design
75W
TDP
66W
250 W
Suggested PSU
250 W
2x DVI
1x mini-HDMI 1.3a
Outputs
1x DVI
1x DisplayPort 1.1
1x VGA
None
Power Connectors
None
Graphics Processor
GF116
GPU Name
Turks
GF116-150-A1
GPU Variant
Turks XT
(215-0803000)
Fermi 2.0
Architecture
TeraScale 2
TSMC
Foundry
TSMC
40 nm
Process Size
40 nm
1.17 billion
Transistors
0.716 billion
238 mm²
Die Size
118 mm²
Graphics Features
12 (11_0)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
1.1
OpenCL
1.2
N/A
Vulkan
N/A
2.1
CUDA
-
5.1
Shader Model
5.0
