GeForce GTX TITAN X vs GeForce GT 640 OEM Rebrand
We compared two Desktop platform GPUs: 12GB VRAM GeForce GTX TITAN X and 1536MB VRAM GeForce GT 640 OEM Rebrand to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
GeForce GTX TITAN X 's Advantages
Released 2 years and 11 months late
Boost Clock1089MHz
More VRAM (12GB vs 1536GB)
Larger VRAM bandwidth (336.6GB/s vs 38.40GB/s)
2928 additional rendering cores
GeForce GT 640 OEM Rebrand 's Advantages
Lower TDP (75W vs 250W)
Score
Benchmark
FP32 (float)
GeForce GTX TITAN X
+1512%
6691
GeForce GT 640 OEM Rebrand
415
Graphics Card
Mar 2015
Release Date
Apr 2012
GeForce 900
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
1000 MHz
Base Clock
-
1089 MHz
Boost Clock
-
1753 MHz
Memory Clock
800 MHz
Memory
12GB
Memory Size
1536MB
GDDR5
Memory Type
DDR3
384bit
Memory Bus
192bit
336.6GB/s
Bandwidth
38.40GB/s
Render Config
-
SM Count
3
3072
Shading Units
144
192
TMUs
24
96
ROPs
24
48 KB (per SMM)
L1 Cache
64 KB (per SM)
3 MB
L2 Cache
384 KB
Theoretical Performance
104.5 GPixel/s
Pixel Rate
4.320 GPixel/s
209.1 GTexel/s
Texture Rate
17.28 GTexel/s
6.691 TFLOPS
FP32 (float)
414.7 GFLOPS
209.1 GFLOPS
FP64 (double)
34.56 GFLOPS
Board Design
250W
TDP
75W
600 W
Suggested PSU
250 W
1x DVI
1x HDMI 2.0
3x DisplayPort 1.4a
Outputs
2x DVI
1x mini-HDMI 1.3a
1x 6-pin + 1x 8-pin
Power Connectors
None
Graphics Processor
GM200
GPU Name
GF116
GM200-400-A1
GPU Variant
GF116-150-A1
Maxwell 2.0
Architecture
Fermi 2.0
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
8 billion
Transistors
1.17 billion
601 mm²
Die Size
238 mm²
Graphics Features
12 (12_1)
DirectX
12 (11_0)
4.6
OpenGL
4.6
3.0
OpenCL
1.1
1.3
Vulkan
N/A
5.2
CUDA
2.1
6.4
Shader Model
5.1
