NVIDIA GeForce GT 740 vs NVIDIA GeForce GT 640 Rev. 2
We compared two Desktop platform GPUs: 1024MB VRAM GeForce GT 740 and 1024MB VRAM GeForce GT 640 Rev. 2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GT 740 's Advantages
Released 1 years late
Larger VRAM bandwidth (80.19GB/s vs 40.06GB/s)
NVIDIA GeForce GT 640 Rev. 2 's Advantages
Lower TDP (49W vs 64W)
Score
Benchmark
FP32 (float)
GeForce GT 740
0.763 TFLOPS
GeForce GT 640 Rev. 2
+5%
0.803 TFLOPS
Graphics Card
May 2014
Release Date
May 2013
GeForce 700
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x8
Clock Speeds
-
-
-
-
-
-
1253 MHz
Memory Clock
1252 MHz
Memory
1024MB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
128bit
Memory Bus
64bit
80.19GB/s
Bandwidth
40.06GB/s
Render Config
-
-
-
-
-
-
384
Shading Units
384
32
TMUs
32
16
ROPs
8
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
16 KB (per SMX)
256 KB
L2 Cache
512 KB
-
-
-
Theoretical Performance
7.944 GPixel/s
Pixel Rate
8.368 GPixel/s
31.78 GTexel/s
Texture Rate
33.47 GTexel/s
-
-
-
762.6 GFLOPS
FP32 (float)
803.3 GFLOPS
31.78 GFLOPS
FP64 (double)
33.47 GFLOPS
Board Design
64W
TDP
49W
250 W
Suggested PSU
200 W
2x DVI
1x mini-HDMI 1.4a
Outputs
1x DVI
1x HDMI 1.4a
1x VGA
1x 6-pin
Power Connectors
None
Graphics Processor
GK107
GPU Name
GK208
GK107-425-A2
GPU Variant
GK208-400-A1
Kepler
Architecture
Kepler 2.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
1.27 billion
Transistors
1.02 billion
118 mm²
Die Size
87 mm²
Graphics Features
12 (11_0)
DirectX
12 (11_0)
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
