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GPU Comparison
NVIDIA GeForce GT 640 vs NVIDIA GeForce GTX 780 Ti 6 GB
NVIDIA GeForce GT 640 vs NVIDIA GeForce GTX 780 Ti 6 GB
VS
NVIDIA GeForce GT 640
NVIDIA GeForce GTX 780 Ti 6 GB
We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 6GB VRAM GeForce GTX 780 Ti 6 GB 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 250W)
NVIDIA GeForce GTX 780 Ti 6 GB 's Advantages
Boost Clock928MHz
More VRAM (6GB vs 2GB)
Larger VRAM bandwidth (336.6GB/s vs 28.51GB/s)
2496 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce GT 640
0.693 TFLOPS
GeForce GTX 780 Ti 6 GB
+671%
5.345 TFLOPS
GeForce GT 640
VS
GeForce GTX 780 Ti 6 GB
Graphics Card
Jun 2012
Release Date
Unknown
GeForce 600
Generation
GeForce 700
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
875 MHz
-
Boost Clock
928 MHz
891 MHz
Memory Clock
1753 MHz
Memory
2GB
Memory Size
6GB
DDR3
Memory Type
GDDR5
128bit
Memory Bus
384bit
28.51GB/s
Bandwidth
336.6GB/s
Render Config
-
-
-
-
-
-
384
Shading Units
2880
32
TMUs
240
16
ROPs
48
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
16 KB (per SMX)
256 KB
L2 Cache
1536 KB
-
-
-
Theoretical Performance
7.216 GPixel/s
Pixel Rate
55.68 GPixel/s
28.86 GTexel/s
Texture Rate
222.7 GTexel/s
-
-
-
692.7 GFLOPS
FP32 (float)
5.345 TFLOPS
28.86 GFLOPS
FP64 (double)
222.7 GFLOPS
Board Design
65W
TDP
250W
250 W
Suggested PSU
600 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
1x 6-pin + 1x 8-pin
Graphics Processor
GK107
GPU Name
GK110B
GK107-300-A2
GPU Variant
-
Kepler
Architecture
Kepler
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
1.27 billion
Transistors
7.08 billion
118 mm²
Die Size
561 mm²
Graphics Features
12 (11_0)
DirectX
12 (11_1)
4.6
OpenGL
4.6
3.0
OpenCL
3.0
1.1
Vulkan
1.1
3.0
CUDA
3.5
5.1
Shader Model
5.1
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9
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10
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