AMD Radeon R7 250X vs NVIDIA GeForce GT 640 OEM Rebrand

VS

AMD Radeon R7 250X

NVIDIA GeForce GT 640 OEM Rebrand

We compared two Desktop platform GPUs: 1024MB VRAM Radeon R7 250X 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 R7 250X 's Advantages

Released 1 years and 10 months late

Larger VRAM bandwidth (72.00GB/s vs 38.40GB/s)

496 additional rendering cores

NVIDIA GeForce GT 640 OEM Rebrand 's Advantages

More VRAM (1536GB vs 1024GB)

Lower TDP (75W vs 80W)

Score

Benchmark

FP32 (float)

Radeon R7 250X +193%

1.216 TFLOPS

GeForce GT 640 OEM Rebrand

0.415 TFLOPS

Radeon R7 250X

VS

GeForce GT 640 OEM Rebrand

Graphics Card

Feb 2014

Release Date

Apr 2012

Volcanic Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1125 MHz

Memory Clock

800 MHz

Memory

1024MB

Memory Size

1536MB

GDDR5

Memory Type

DDR3

128bit

Memory Bus

192bit

72.00GB/s

Bandwidth

38.40GB/s

Render Config

10

Compute Units

-

SM Count

3

640

Shading Units

144

40

TMUs

24

16

ROPs

24

-

16 KB (per CU)

L1 Cache

64 KB (per SM)

256 KB

L2 Cache

384 KB

-

Theoretical Performance

15.20 GPixel/s

Pixel Rate

4.320 GPixel/s

38.00 GTexel/s

Texture Rate

17.28 GTexel/s

-

1216 GFLOPS

FP32 (float)

414.7 GFLOPS

76.00 GFLOPS

FP64 (double)

34.56 GFLOPS

Board Design

80W

TDP

75W

250 W

Suggested PSU

250 W

1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2

Outputs

2x DVI 1x mini-HDMI 1.3a

1x 6-pin

Power Connectors

None

Graphics Processor

Cape Verde

GPU Name

GF116

Cape Verde XT

GPU Variant

GF116-150-A1

GCN 1.0

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

1.5 billion

Transistors

1.17 billion

123 mm²

Die Size

238 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.2

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

2.1

5.1

Shader Model

5.1

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