Home GPU Comparison NVIDIA GeForce GT 640 vs AMD Radeon RX 7950 XTX

NVIDIA GeForce GT 640 vs AMD Radeon RX 7950 XTX

We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 24GB VRAM Radeon RX 7950 XTX to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 's Advantages
Lower TDP (65W vs 355W)
AMD Radeon RX 7950 XTX 's Advantages
Boost Clock3300MHz
More VRAM (24GB vs 2GB)
Larger VRAM bandwidth (960.0GB/s vs 28.51GB/s)
5760 additional rendering cores

Score

Benchmark

FP32 (float)
GeForce GT 640
0.693 TFLOPS
Radeon RX 7950 XTX +11602%
81.1 TFLOPS
VS

Graphics Card

Jun 2012
Release Date
Unknown
GeForce 600
Generation
Navi III
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 4.0 x16

Clock Speeds

-
Base Clock
2200 MHz
-
Boost Clock
3300 MHz
891 MHz
Memory Clock
2500 MHz

Memory

2GB
Memory Size
24GB
DDR3
Memory Type
GDDR6
128bit
Memory Bus
384bit
28.51GB/s
Bandwidth
960.0GB/s

Render Config

-
Compute Units
96
-
-
-
384
Shading Units
6144
32
TMUs
384
16
ROPs
192
-
-
-
-
RT Cores
96
16 KB (per SMX)
L1 Cache
256 KB per Array
256 KB
L2 Cache
6 MB
-
L3 Cache
96 MB

Theoretical Performance

7.216 GPixel/s
Pixel Rate
633.6 GPixel/s
28.86 GTexel/s
Texture Rate
1267 GTexel/s
-
FP16 (half)
162.2 TFLOPS
692.7 GFLOPS
FP32 (float)
81.10 TFLOPS
28.86 GFLOPS
FP64 (double)
2.534 TFLOPS

Board Design

65W
TDP
355W
250 W
Suggested PSU
750 W
1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
Outputs
1x HDMI 2.1a 2x DisplayPort 2.1 1x USB Type-C
None
Power Connectors
2x 8-pin

Graphics Processor

GK107
GPU Name
Navi 31
GK107-300-A2
GPU Variant
Navi 31 XTX+
Kepler
Architecture
RDNA 3.0
TSMC
Foundry
TSMC
28 nm
Process Size
5 nm
1.27 billion
Transistors
57.7 billion
118 mm²
Die Size
529 mm²

Graphics Features

12 (11_0)
DirectX
12 Ultimate (12_2)
4.6
OpenGL
4.6
3.0
OpenCL
2.2
1.1
Vulkan
1.3
3.0
CUDA
-
5.1
Shader Model
6.7

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