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GPU Comparison
AMD Radeon RX 6900 XTX vs NVIDIA GeForce GT 640 OEM
AMD Radeon RX 6900 XTX vs NVIDIA GeForce GT 640 OEM
VS
AMD Radeon RX 6900 XTX
NVIDIA GeForce GT 640 OEM
We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 6900 XTX and 2GB VRAM GeForce GT 640 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon RX 6900 XTX 's Advantages
Boost Clock2435MHz
More VRAM (16GB vs 2GB)
Larger VRAM bandwidth (576.0GB/s vs 28.51GB/s)
4736 additional rendering cores
NVIDIA GeForce GT 640 OEM 's Advantages
Lower TDP (50W vs 330W)
Score
Benchmark
FP32 (float)
Radeon RX 6900 XTX
+3973%
24.93 TFLOPS
GeForce GT 640 OEM
0.612 TFLOPS
Radeon RX 6900 XTX
VS
GeForce GT 640 OEM
Graphics Card
Unknown
Release Date
Apr 2012
Navi II
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 4.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
2075 MHz
Base Clock
-
2435 MHz
Boost Clock
-
2250 MHz
Memory Clock
891 MHz
Memory
16GB
Memory Size
2GB
GDDR6
Memory Type
DDR3
256bit
Memory Bus
128bit
576.0GB/s
Bandwidth
28.51GB/s
Render Config
80
Compute Units
-
-
-
-
5120
Shading Units
384
320
TMUs
32
128
ROPs
16
-
-
-
80
RT Cores
-
128 KB per Array
L1 Cache
16 KB (per SMX)
4 MB
L2 Cache
256 KB
128 MB
L3 Cache
-
Theoretical Performance
311.7 GPixel/s
Pixel Rate
6.376 GPixel/s
779.2 GTexel/s
Texture Rate
25.50 GTexel/s
49.87 TFLOPS
FP16 (half)
-
24.93 TFLOPS
FP32 (float)
612.1 GFLOPS
1.558 TFLOPS
FP64 (double)
25.50 GFLOPS
Board Design
330W
TDP
50W
700 W
Suggested PSU
250 W
1x HDMI 2.1 2x DisplayPort 1.4a 1x USB Type-C
Outputs
1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
2x 8-pin
Power Connectors
None
Graphics Processor
Navi 21
GPU Name
GK107
Navi 21 XTXH (215-121000247)
GPU Variant
GK107-320-A2
RDNA 2.0
Architecture
Kepler
TSMC
Foundry
TSMC
7 nm
Process Size
28 nm
26.8 billion
Transistors
1.27 billion
520 mm²
Die Size
118 mm²
Graphics Features
12 Ultimate (12_2)
DirectX
12 (11_0)
4.6
OpenGL
4.6
2.1
OpenCL
3.0
1.3
Vulkan
1.1
-
CUDA
3.0
6.5
Shader Model
5.1
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