NVIDIA GeForce 8800 GT Mac Edition vs NVIDIA GeForce GT 640
We compared two Desktop platform GPUs: 512MB VRAM GeForce 8800 GT Mac Edition and 2GB VRAM GeForce GT 640 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 28.51GB/s)
NVIDIA GeForce GT 640 's Advantages
Released 4 years and 4 months late
More VRAM (2GB vs 512GB)
272 additional rendering cores
Lower TDP (65W vs 125W)
Score
Benchmark
FP32 (float)
GeForce 8800 GT Mac Edition
0.336 TFLOPS
GeForce GT 640
+106%
0.693 TFLOPS
Graphics Card
Feb 2008
Release Date
Jun 2012
GeForce 8
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
-
-
-
-
-
900 MHz
Memory Clock
891 MHz
Memory
512MB
Memory Size
2GB
GDDR3
Memory Type
DDR3
256bit
Memory Bus
128bit
57.60GB/s
Bandwidth
28.51GB/s
Render Config
-
-
-
14
SM Count
-
112
Shading Units
384
56
TMUs
32
16
ROPs
16
-
-
-
-
-
-
-
L1 Cache
16 KB (per SMX)
64 KB
L2 Cache
256 KB
-
-
-
Theoretical Performance
9.600 GPixel/s
Pixel Rate
7.216 GPixel/s
33.60 GTexel/s
Texture Rate
28.86 GTexel/s
-
-
-
336.0 GFLOPS
FP32 (float)
692.7 GFLOPS
-
FP64 (double)
28.86 GFLOPS
Board Design
125W
TDP
65W
300 W
Suggested PSU
250 W
2x DVI
Outputs
1x DVI
1x HDMI 1.4a
1x DisplayPort 1.2
1x 6-pin
Power Connectors
None
Graphics Processor
G92
GPU Name
GK107
G92-270-A2
GPU Variant
GK107-300-A2
Tesla
Architecture
Kepler
TSMC
Foundry
TSMC
65 nm
Process Size
28 nm
0.754 billion
Transistors
1.27 billion
324 mm²
Die Size
118 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
3.0
4.0
Shader Model
5.1
