NVIDIA GeForce GT 640 OEM Rebrand vs AMD Radeon 540

VS

NVIDIA GeForce GT 640 OEM Rebrand

AMD Radeon 540

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GT 640 OEM Rebrand and 1024MB VRAM AMD Radeon 540 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

More VRAM (1536GB vs 1024GB)

Larger VRAM bandwidth (38.40GB/s vs 24.00GB/s)

AMD Radeon 540 's Advantages

Released 5 years late

240 additional rendering cores

Lower TDP (50W vs 75W)

Score

Benchmark

FP32 (float)

GeForce GT 640 OEM Rebrand

0.415 TFLOPS

AMD Radeon 540 +118%

0.908 TFLOPS

GeForce GT 640 OEM Rebrand

VS

AMD Radeon 540

Graphics Card

Apr 2012

Release Date

Apr 2017

GeForce 600

Generation

Polaris

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

800 MHz

Memory Clock

1500 MHz

Memory

1536MB

Memory Size

1024MB

DDR3

Memory Type

GDDR5

192bit

Memory Bus

32bit

38.40GB/s

Bandwidth

24.00GB/s

Render Config

-

Compute Units

6

3

SM Count

-

144

Shading Units

384

24

TMUs

24

ROPs

16

-

64 KB (per SM)

L1 Cache

16 KB (per CU)

384 KB

L2 Cache

512 KB

-

Theoretical Performance

4.320 GPixel/s

Pixel Rate

18.93 GPixel/s

17.28 GTexel/s

Texture Rate

28.39 GTexel/s

-

FP16 (half)

908.5 GFLOPS

414.7 GFLOPS

FP32 (float)

908.5 GFLOPS

34.56 GFLOPS

FP64 (double)

56.78 GFLOPS

Board Design

75W

TDP

50W

250 W

Suggested PSU

250 W

2x DVI 1x mini-HDMI 1.3a

Outputs

2x DisplayPort 1.4a

None

Power Connectors

None

Graphics Processor

GF116

GPU Name

Lexa

GF116-150-A1

GPU Variant

Lexa PRO (215-0904018)

Fermi 2.0

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

40 nm

Process Size

14 nm

1.17 billion

Transistors

2.2 billion

238 mm²

Die Size

103 mm²

Graphics Features

12 (11_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

1.1

OpenCL

2.1

N/A

Vulkan

1.3

2.1

CUDA

-

5.1

Shader Model

6.7

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