AMD Radeon RX 7800 vs NVIDIA GeForce GT 640 OEM

VS

AMD Radeon RX 7800

NVIDIA GeForce GT 640 OEM

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 7800 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 7800 's Advantages

Released 10 years and 9 months late

Boost Clock2800MHz

More VRAM (16GB vs 2GB)

Larger VRAM bandwidth (576.0GB/s vs 28.51GB/s)

3456 additional rendering cores

NVIDIA GeForce GT 640 OEM 's Advantages

Lower TDP (50W vs 300W)

Score

Benchmark

FP32 (float)

Radeon RX 7800 +5998%

37.32 TFLOPS

GeForce GT 640 OEM

0.612 TFLOPS

Radeon RX 7800

VS

GeForce GT 640 OEM

Graphics Card

Jan 2023

Release Date

Apr 2012

Navi III

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1800 MHz

Base Clock

-

2800 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

60

Compute Units

-

3840

Shading Units

384

240

TMUs

32

128

ROPs

16

-

60

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per SMX)

4 MB

L2 Cache

256 KB

64 MB

L3 Cache

-

Theoretical Performance

358.4 GPixel/s

Pixel Rate

6.376 GPixel/s

672.0 GTexel/s

Texture Rate

25.50 GTexel/s

86.02 TFLOPS

FP16 (half)

-

43.01 TFLOPS

FP32 (float)

612.1 GFLOPS

1344 GFLOPS

FP64 (double)

25.50 GFLOPS

Board Design

300W

TDP

50W

700 W

Suggested PSU

250 W

1x HDMI 2.1a 3x DisplayPort 2.1

Outputs

1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

2x 8-pin

Power Connectors

None

Graphics Processor

Navi 32

GPU Name

GK107

Navi 32 XT

GPU Variant

GK107-320-A2

RDNA 3.0

Architecture

Kepler

TSMC

Foundry

TSMC

5 nm

Process Size

28 nm

Unknown

Transistors

1.27 billion

346 mm²

Die Size

118 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

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