NVIDIA GeForce GTX 285 Mac Edition vs NVIDIA GeForce GT 640
We compared two Desktop platform GPUs: 1024MB VRAM GeForce GTX 285 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 GTX 285 Mac Edition 's Advantages
Larger VRAM bandwidth (159.0GB/s vs 28.51GB/s)
NVIDIA GeForce GT 640 's Advantages
Released 3 years and 5 months late
More VRAM (2GB vs 1024GB)
144 additional rendering cores
Lower TDP (65W vs 204W)
Score
Benchmark
FP32 (float)
GeForce GTX 285 Mac Edition
+2%
0.708 TFLOPS
GeForce GT 640
0.693 TFLOPS
Graphics Card
Jan 2009
Release Date
Jun 2012
GeForce 200
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
-
-
-
-
-
1242 MHz
Memory Clock
891 MHz
Memory
1024MB
Memory Size
2GB
GDDR3
Memory Type
DDR3
512bit
Memory Bus
128bit
159.0GB/s
Bandwidth
28.51GB/s
Render Config
-
-
-
30
SM Count
-
240
Shading Units
384
80
TMUs
32
32
ROPs
16
-
-
-
-
-
-
-
L1 Cache
16 KB (per SMX)
256 KB
L2 Cache
256 KB
-
-
-
Theoretical Performance
20.74 GPixel/s
Pixel Rate
7.216 GPixel/s
51.84 GTexel/s
Texture Rate
28.86 GTexel/s
-
-
-
708.5 GFLOPS
FP32 (float)
692.7 GFLOPS
88.56 GFLOPS
FP64 (double)
28.86 GFLOPS
Board Design
204W
TDP
65W
550 W
Suggested PSU
250 W
2x DVI
1x S-Video
Outputs
1x DVI
1x HDMI 1.4a
1x DisplayPort 1.2
2x 6-pin
Power Connectors
None
Graphics Processor
GT200B
GPU Name
GK107
G200-350-B3
GPU Variant
GK107-300-A2
Tesla 2.0
Architecture
Kepler
TSMC
Foundry
TSMC
55 nm
Process Size
28 nm
1.4 billion
Transistors
1.27 billion
470 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
1.3
CUDA
3.0
4.0
Shader Model
5.1
