NVIDIA GeForce 8800 GT Mac Edition vs NVIDIA GeForce GT 640 Rev. 2
We compared two Desktop platform GPUs: 512MB VRAM GeForce 8800 GT Mac Edition and 1024MB VRAM GeForce GT 640 Rev. 2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce 8800 GT Mac Edition 's Advantages
Larger VRAM bandwidth (57.60GB/s vs 40.06GB/s)
NVIDIA GeForce GT 640 Rev. 2 's Advantages
Released 5 years and 3 months late
More VRAM (1024GB vs 512GB)
272 additional rendering cores
Lower TDP (49W vs 125W)
Score
Benchmark
FP32 (float)
GeForce 8800 GT Mac Edition
0.336 TFLOPS
GeForce GT 640 Rev. 2
+138%
0.803 TFLOPS
Graphics Card
Feb 2008
Release Date
May 2013
GeForce 8
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x8
Clock Speeds
-
-
-
-
-
-
900 MHz
Memory Clock
1252 MHz
Memory
512MB
Memory Size
1024MB
GDDR3
Memory Type
GDDR5
256bit
Memory Bus
64bit
57.60GB/s
Bandwidth
40.06GB/s
Render Config
-
-
-
14
SM Count
-
112
Shading Units
384
56
TMUs
32
16
ROPs
8
-
-
-
-
-
-
-
L1 Cache
16 KB (per SMX)
64 KB
L2 Cache
512 KB
-
-
-
Theoretical Performance
9.600 GPixel/s
Pixel Rate
8.368 GPixel/s
33.60 GTexel/s
Texture Rate
33.47 GTexel/s
-
-
-
336.0 GFLOPS
FP32 (float)
803.3 GFLOPS
-
FP64 (double)
33.47 GFLOPS
Board Design
125W
TDP
49W
300 W
Suggested PSU
200 W
2x DVI
Outputs
1x DVI
1x HDMI 1.4a
1x VGA
1x 6-pin
Power Connectors
None
Graphics Processor
G92
GPU Name
GK208
G92-270-A2
GPU Variant
GK208-400-A1
Tesla
Architecture
Kepler 2.0
TSMC
Foundry
TSMC
65 nm
Process Size
28 nm
0.754 billion
Transistors
1.02 billion
324 mm²
Die Size
87 mm²
Graphics Features
11.1 (10_0)
DirectX
12 (11_0)
3.3
OpenGL
4.6
1.1
OpenCL
3.0
N/A
Vulkan
1.1
1.1
CUDA
3.5
4.0
Shader Model
5.1
