AMD Radeon RX 7800 vs NVIDIA GeForce GT 640 OEM Rebrand

VS

AMD Radeon RX 7800

NVIDIA GeForce GT 640 OEM Rebrand

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 7800 and 1536MB VRAM GeForce GT 640 OEM Rebrand 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 1536GB)

Larger VRAM bandwidth (576.0GB/s vs 38.40GB/s)

3696 additional rendering cores

NVIDIA GeForce GT 640 OEM Rebrand 's Advantages

Lower TDP (75W vs 300W)

Score

Benchmark

FP32 (float)

Radeon RX 7800 +8892%

37.32 TFLOPS

GeForce GT 640 OEM Rebrand

0.415 TFLOPS

Radeon RX 7800

VS

GeForce GT 640 OEM Rebrand

Graphics Card

Jan 2023

Release Date

Apr 2012

Navi III

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

1800 MHz

Base Clock

-

2800 MHz

Boost Clock

-

2250 MHz

Memory Clock

800 MHz

Memory

16GB

Memory Size

1536MB

GDDR6

Memory Type

DDR3

256bit

Memory Bus

192bit

576.0GB/s

Bandwidth

38.40GB/s

Render Config

60

Compute Units

-

SM Count

3

3840

Shading Units

144

240

TMUs

24

128

ROPs

24

-

60

RT Cores

-

128 KB per Array

L1 Cache

64 KB (per SM)

4 MB

L2 Cache

384 KB

64 MB

L3 Cache

-

Theoretical Performance

358.4 GPixel/s

Pixel Rate

4.320 GPixel/s

672.0 GTexel/s

Texture Rate

17.28 GTexel/s

86.02 TFLOPS

FP16 (half)

-

43.01 TFLOPS

FP32 (float)

414.7 GFLOPS

1344 GFLOPS

FP64 (double)

34.56 GFLOPS

Board Design

300W

TDP

75W

700 W

Suggested PSU

250 W

1x HDMI 2.1a 3x DisplayPort 2.1

Outputs

2x DVI 1x mini-HDMI 1.3a

2x 8-pin

Power Connectors

None

Graphics Processor

Navi 32

GPU Name

GF116

Navi 32 XT

GPU Variant

GF116-150-A1

RDNA 3.0

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

5 nm

Process Size

40 nm

Unknown

Transistors

1.17 billion

346 mm²

Die Size

238 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.2

OpenCL

1.1

1.3

Vulkan

N/A

-

CUDA

2.1

6.7

Shader Model

5.1

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