AMD Radeon R7 250X vs NVIDIA GeForce GT 640 Rev. 2

VS

AMD Radeon R7 250X NVIDIA GeForce GT 640 Rev. 2

We compared two Desktop platform GPUs: 1024MB VRAM Radeon R7 250X and 1024MB VRAM GeForce GT 640 Rev. 2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R7 250X 's Advantages

Released 9 months late

Larger VRAM bandwidth (72.00GB/s vs 40.06GB/s)

256 additional rendering cores

NVIDIA GeForce GT 640 Rev. 2 's Advantages

Lower TDP (49W vs 80W)

Score

Benchmark

FP32 (float)

Radeon R7 250X +51%

1.216 TFLOPS

GeForce GT 640 Rev. 2

0.803 TFLOPS

Radeon R7 250X

VS

GeForce GT 640 Rev. 2

Graphics Card

Feb 2014

Release Date

May 2013

Volcanic Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x8

Clock Speeds

-

Base Clock

-

Boost Clock

-

1125 MHz

Memory Clock

1252 MHz

Memory

1024MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

64bit

72.00GB/s

Bandwidth

40.06GB/s

Render Config

-

SM Count

-

10

Compute Units

-

640

Shading Units

384

40

TMUs

32

16

ROPs

8

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

512 KB

Theoretical Performance

15.20 GPixel/s

Pixel Rate

8.368 GPixel/s

38.00 GTexel/s

Texture Rate

33.47 GTexel/s

-

FP16 (half)

-

1216 GFLOPS

FP32 (float)

803.3 GFLOPS

76.00 GFLOPS

FP64 (double)

33.47 GFLOPS

Graphics Processor

Cape Verde

GPU Name

GK208

Cape Verde XT

GPU Variant

GK208-400-A1

GCN 1.0

Architecture

Kepler 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.5 billion

Transistors

1.02 billion

123 mm²

Die Size

87 mm²

Board Design

80W

TDP

49W

250 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x HDMI 1.4a 1x VGA

1x 6-pin

Power Connectors

None

Graphics Features

12 (11_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.2

OpenCL

3.0

1.2

Vulkan

1.1

-

CUDA

3.5

5.1

Shader Model

5.1

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