NVIDIA GeForce GT 640 OEM Rebrand vs AMD Radeon RX 6900 XT

VS

NVIDIA GeForce GT 640 OEM Rebrand

AMD Radeon RX 6900 XT

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GT 640 OEM Rebrand and 16GB VRAM Radeon RX 6900 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 OEM Rebrand 's Advantages

Lower TDP (75W vs 300W)

AMD Radeon RX 6900 XT 's Advantages

Released 8 years and 6 months late

Boost Clock2250MHz

More VRAM (16GB vs 1536GB)

Larger VRAM bandwidth (512.0GB/s vs 38.40GB/s)

4976 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640 OEM Rebrand

0.415 TFLOPS

Radeon RX 6900 XT +5451%

23.04 TFLOPS

GeForce GT 640 OEM Rebrand

VS

Radeon RX 6900 XT

Graphics Card

Apr 2012

Release Date

Oct 2020

GeForce 600

Generation

Navi II

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

1825 MHz

-

Boost Clock

2250 MHz

800 MHz

Memory Clock

2000 MHz

Memory

1536MB

Memory Size

16GB

DDR3

Memory Type

GDDR6

192bit

Memory Bus

256bit

38.40GB/s

Bandwidth

512.0GB/s

Render Config

-

Compute Units

80

3

SM Count

-

144

Shading Units

5120

24

TMUs

320

24

ROPs

128

-

RT Cores

80

64 KB (per SM)

L1 Cache

128 KB per Array

384 KB

L2 Cache

4 MB

-

L3 Cache

128 MB

Theoretical Performance

4.320 GPixel/s

Pixel Rate

288.0 GPixel/s

17.28 GTexel/s

Texture Rate

720.0 GTexel/s

-

FP16 (half)

46.08 TFLOPS

414.7 GFLOPS

FP32 (float)

23.04 TFLOPS

34.56 GFLOPS

FP64 (double)

1440 GFLOPS

Board Design

75W

TDP

300W

250 W

Suggested PSU

700 W

2x DVI 1x mini-HDMI 1.3a

Outputs

1x HDMI 2.1 2x DisplayPort 1.4a 1x USB Type-C

None

Power Connectors

2x 8-pin

Graphics Processor

GF116

GPU Name

Navi 21

GF116-150-A1

GPU Variant

Navi 21 XTX (215-121000167)

Fermi 2.0

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

7 nm

1.17 billion

Transistors

26.8 billion

238 mm²

Die Size

520 mm²

Graphics Features

12 (11_0)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

1.1

OpenCL

2.1

N/A

Vulkan

1.3

2.1

CUDA

-

5.1

Shader Model

6.5

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