AMD Radeon RX 7990 XTX vs NVIDIA GeForce GT 640 OEM

VS

AMD Radeon RX 7990 XTX NVIDIA GeForce GT 640 OEM

We compared two Desktop platform GPUs: 24GB VRAM Radeon RX 7990 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 7990 XTX 's Advantages

Boost Clock3599MHz

More VRAM (24GB vs 2GB)

Larger VRAM bandwidth (1152GB/s vs 28.51GB/s)

5760 additional rendering cores

NVIDIA GeForce GT 640 OEM 's Advantages

Lower TDP (50W vs 405W)

Score

Benchmark

FP32 (float)

Radeon RX 7990 XTX +14352%

88.45 TFLOPS

GeForce GT 640 OEM

0.612 TFLOPS

Radeon RX 7990 XTX

VS

GeForce GT 640 OEM

Graphics Card

Unknown

Release Date

Apr 2012

Navi III

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

2500 MHz

Base Clock

-

3599 MHz

Boost Clock

-

3000 MHz

Memory Clock

891 MHz

Memory

24GB

Memory Size

2GB

GDDR6

Memory Type

DDR3

384bit

Memory Bus

128bit

1152GB/s

Bandwidth

28.51GB/s

Render Config

-

SM Count

-

96

Compute Units

-

6144

Shading Units

384

TMUs

32

192

ROPs

16

-

Tensor Cores

-

96

RT Cores

-

256 KB per Array

L1 Cache

16 KB (per SMX)

6 MB

L2 Cache

256 KB

Theoretical Performance

691.0 GPixel/s

Pixel Rate

6.376 GPixel/s

1382 GTexel/s

Texture Rate

25.50 GTexel/s

176.9 TFLOPS

FP16 (half)

-

88.45 TFLOPS

FP32 (float)

612.1 GFLOPS

2.764 TFLOPS

FP64 (double)

25.50 GFLOPS

Graphics Processor

Navi 31

GPU Name

GK107

Navi 31 XTX+

GPU Variant

GK107-320-A2

RDNA 3.0

Architecture

Kepler

TSMC

Foundry

TSMC

5 nm

Process Size

28 nm

57.7 billion

Transistors

1.27 billion

529 mm²

Die Size

118 mm²

Board Design

405W

TDP

50W

800 W

Suggested PSU

250 W

1x HDMI 2.1a 2x DisplayPort 2.1 1x USB Type-C

Outputs

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

3x 8-pin

Power Connectors

None

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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