NVIDIA GeForce GT 640 OEM Rebrand vs NVIDIA GeForce GT 740 OEM
We compared two Desktop platform GPUs: 1536MB VRAM GeForce GT 640 OEM Rebrand and 1024MB VRAM GeForce GT 740 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GT 640 OEM Rebrand 's Advantages
More VRAM (1536GB vs 1024GB)
NVIDIA GeForce GT 740 OEM 's Advantages
Released 3 years late
Larger VRAM bandwidth (80.19GB/s vs 38.40GB/s)
240 additional rendering cores
Lower TDP (65W vs 75W)
Score
Benchmark
FP32 (float)
GeForce GT 640 OEM Rebrand
0.415 TFLOPS
GeForce GT 740 OEM
+86%
0.773 TFLOPS
Graphics Card
Apr 2012
Release Date
Apr 2015
GeForce 600
Generation
GeForce 700
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
-
-
-
-
-
800 MHz
Memory Clock
1253 MHz
Memory
1536MB
Memory Size
1024MB
DDR3
Memory Type
GDDR5
192bit
Memory Bus
128bit
38.40GB/s
Bandwidth
80.19GB/s
Render Config
-
-
-
3
SM Count
-
144
Shading Units
384
24
TMUs
32
24
ROPs
16
-
-
-
-
-
-
64 KB (per SM)
L1 Cache
16 KB (per SMX)
384 KB
L2 Cache
256 KB
-
-
-
Theoretical Performance
4.320 GPixel/s
Pixel Rate
8.048 GPixel/s
17.28 GTexel/s
Texture Rate
32.19 GTexel/s
-
-
-
414.7 GFLOPS
FP32 (float)
772.6 GFLOPS
34.56 GFLOPS
FP64 (double)
32.19 GFLOPS
Board Design
75W
TDP
65W
250 W
Suggested PSU
250 W
2x DVI
1x mini-HDMI 1.3a
Outputs
No outputs
None
Power Connectors
None
Graphics Processor
GF116
GPU Name
GK106
GF116-150-A1
GPU Variant
-
Fermi 2.0
Architecture
Kepler
TSMC
Foundry
TSMC
40 nm
Process Size
28 nm
1.17 billion
Transistors
2.54 billion
238 mm²
Die Size
221 mm²
Graphics Features
12 (11_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
1.1
OpenCL
3.0
N/A
Vulkan
1.1
2.1
CUDA
3.0
5.1
Shader Model
5.1
