Home GPU Comparison NVIDIA GeForce GT 640 Rev. 2 vs AMD Radeon RX 6600 XT

NVIDIA GeForce GT 640 Rev. 2 vs AMD Radeon RX 6600 XT

NVIDIA GeForce GT 640 Rev. 2
VS
AMD Radeon RX 6600 XT
NVIDIA GeForce GT 640 Rev. 2 AMD Radeon RX 6600 XT
We compared two Desktop platform GPUs: 1024MB VRAM GeForce GT 640 Rev. 2 and 8GB VRAM Radeon RX 6600 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 Rev. 2 's Advantages
Lower TDP (49W vs 160W)
AMD Radeon RX 6600 XT 's Advantages
Released 8 years and 2 months late
Boost Clock2589MHz
More VRAM (8GB vs 1GB)
Larger VRAM bandwidth (256.0GB/s vs 40.06GB/s)
1664 additional rendering cores

Score

Benchmark

FP32 (float)
GeForce GT 640 Rev. 2
0.803 TFLOPS
Radeon RX 6600 XT +1220%
10.6 TFLOPS
GeForce GT 640 Rev. 2
VS
Radeon RX 6600 XT

Graphics Card

May 2013
Release Date
Jul 2021
GeForce 600
Generation
Navi II
Desktop
Type
Desktop
PCIe 2.0 x8
Bus Interface
PCIe 4.0 x8

Clock Speeds

-
Base Clock
1968 MHz
-
Boost Clock
2589 MHz
1252 MHz
Memory Clock
2000 MHz

Memory

1024MB
Memory Size
8GB
GDDR5
Memory Type
GDDR6
64bit
Memory Bus
128bit
40.06GB/s
Bandwidth
256.0GB/s

Render Config

-
SM Count
-
-
Compute Units
32
384
Shading Units
2048
32
TMUs
128
8
ROPs
64
-
Tensor Cores
-
-
RT Cores
32
16 KB (per SMX)
L1 Cache
128 KB per Array
512 KB
L2 Cache
2 MB

Theoretical Performance

8.368 GPixel/s
Pixel Rate
165.7 GPixel/s
33.47 GTexel/s
Texture Rate
331.4 GTexel/s
-
FP16 (half)
21.21 TFLOPS
803.3 GFLOPS
FP32 (float)
10.60 TFLOPS
33.47 GFLOPS
FP64 (double)
662.8 GFLOPS

Graphics Processor

GK208
GPU Name
Navi 23
GK208-400-A1
GPU Variant
Navi 23 XT (215-130000006)
Kepler 2.0
Architecture
RDNA 2.0
TSMC
Foundry
TSMC
28 nm
Process Size
7 nm
1.02 billion
Transistors
11.06 billion
87 mm²
Die Size
237 mm²

Board Design

49W
TDP
160W
200 W
Suggested PSU
450 W
1x DVI 1x HDMI 1.4a 1x VGA
Outputs
1x HDMI 2.1 3x DisplayPort 1.4a
None
Power Connectors
1x 8-pin

Graphics Features

12 (11_0)
DirectX
12 Ultimate (12_2)
4.6
OpenGL
4.6
3.0
OpenCL
2.1
1.1
Vulkan
1.3
3.5
CUDA
-
5.1
Shader Model
6.7

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