Radeon RX 7700 vs GeForce GTX 645 OEM
We compared two Desktop platform GPUs: 12GB VRAM Radeon RX 7700 and 1024MB VRAM GeForce GTX 645 OEM 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 64.00GB/s)
2496 additional rendering cores
GeForce GTX 645 OEM Advantages
Lower TDP (65W vs 200W)
Score
Benchmark
FP32 (float)
Radeon RX 7700
+3266%
31950
GeForce GTX 645 OEM
949
Graphics Card
Unknown
Release Date
Apr 2013
Navi III
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 4.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
1900 MHz
Base Clock
-
2600 MHz
Boost Clock
-
2250 MHz
Memory Clock
1000 MHz
Memory
12GB
Memory Size
1024MB
GDDR6
Memory Type
GDDR5
192bit
Memory Bus
128bit
432.0GB/s
Bandwidth
64.00GB/s
Render Config
48
Compute Units
-
3072
Shading Units
576
192
TMUs
48
96
ROPs
16
48
RT Cores
-
128 KB per Array
L1 Cache
16 KB (per SMX)
2 MB
L2 Cache
256 KB
64 MB
L3 Cache
-
Theoretical Performance
249.6 GPixel/s
Pixel Rate
9.888 GPixel/s
499.2 GTexel/s
Texture Rate
39.55 GTexel/s
63.90 TFLOPS
FP16 (half)
-
31.95 TFLOPS
FP32 (float)
949.2 GFLOPS
998.4 GFLOPS
FP64 (double)
39.55 GFLOPS
Board Design
200W
TDP
65W
550 W
Suggested PSU
250 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 DisplayPort 1.2
1x HDMI 1.4a
1x DisplayPort 1.2
1x 8-pin
Power Connectors
None
Graphics Processor
Navi 32
GPU Name
GK106
Navi 32
GPU Variant
GK106-200-A1
RDNA 3.0
Architecture
Kepler
TSMC
Foundry
TSMC
5 nm
Process Size
28 nm
28.1 billion
Transistors
2.54 billion
346 mm²
Die Size
221 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
3.0
6.7
Shader Model
5.1
