Radeon RX 7700 vs GeForce GT 640 Rev. 2
We compared two Desktop platform GPUs: 12GB VRAM Radeon RX 7700 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
Radeon RX 7700 Advantages
Boost Clock2600MHz
More VRAM (12GB vs 1024GB)
Larger VRAM bandwidth (432.0GB/s vs 40.06GB/s)
2688 additional rendering cores
GeForce GT 640 Rev. 2 Advantages
Lower TDP (49W vs 200W)
Score
Benchmark
FP32 (float)
Radeon RX 7700
+3878%
31950
GeForce GT 640 Rev. 2
803
Graphics Card
Unknown
Release Date
May 2013
Navi III
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 4.0 x16
Bus Interface
PCIe 2.0 x8
Clock Speeds
1900 MHz
Base Clock
-
2600 MHz
Boost Clock
-
2250 MHz
Memory Clock
1252 MHz
Memory
12GB
Memory Size
1024MB
GDDR6
Memory Type
GDDR5
192bit
Memory Bus
64bit
432.0GB/s
Bandwidth
40.06GB/s
Render Config
48
Compute Units
-
3072
Shading Units
384
192
TMUs
32
96
ROPs
8
48
RT Cores
-
128 KB per Array
L1 Cache
16 KB (per SMX)
2 MB
L2 Cache
512 KB
64 MB
L3 Cache
-
Theoretical Performance
249.6 GPixel/s
Pixel Rate
8.368 GPixel/s
499.2 GTexel/s
Texture Rate
33.47 GTexel/s
63.90 TFLOPS
FP16 (half)
-
31.95 TFLOPS
FP32 (float)
803.3 GFLOPS
998.4 GFLOPS
FP64 (double)
33.47 GFLOPS
Board Design
200W
TDP
49W
550 W
Suggested PSU
200 W
1x HDMI 2.1a
2x DisplayPort 2.1
1x USB Type-C
2x DisplayPort 2.1
1x USB Type-C
Outputs
1x DVI
1x HDMI 1.4a
1x VGA
1x HDMI 1.4a
1x VGA
1x 8-pin
Power Connectors
None
Graphics Processor
Navi 32
GPU Name
GK208
Navi 32
GPU Variant
GK208-400-A1
RDNA 3.0
Architecture
Kepler 2.0
TSMC
Foundry
TSMC
5 nm
Process Size
28 nm
28.1 billion
Transistors
1.02 billion
346 mm²
Die Size
87 mm²
Graphics Features
12 Ultimate (12_2)
DirectX
12 (11_0)
4.6
OpenGL
4.6
2.2
OpenCL
3.0
1.3
Vulkan
1.1
-
CUDA
3.5
6.7
Shader Model
5.1
