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

VS

AMD Radeon R7 250

NVIDIA GeForce GT 640 Rev. 2

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

128 additional rendering cores

NVIDIA GeForce GT 640 Rev. 2 's Advantages

Larger VRAM bandwidth (40.06GB/s vs 28.80GB/s)

Lower TDP (49W vs 55W)

Score

Benchmark

FP32 (float)

Radeon R7 250

0.717 TFLOPS

GeForce GT 640 Rev. 2 +11%

0.803 TFLOPS

Radeon R7 250

VS

GeForce GT 640 Rev. 2

Graphics Card

Oct 2013

Release Date

May 2013

Volcanic Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x8

Clock Speeds

-

900 MHz

Memory Clock

1252 MHz

Memory

1024MB

Memory Size

1024MB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

64bit

28.80GB/s

Bandwidth

40.06GB/s

Render Config

8

Compute Units

-

512

Shading Units

384

32

TMUs

32

16

ROPs

8

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

11.20 GPixel/s

Pixel Rate

8.368 GPixel/s

22.40 GTexel/s

Texture Rate

33.47 GTexel/s

-

716.8 GFLOPS

FP32 (float)

803.3 GFLOPS

44.80 GFLOPS

FP64 (double)

33.47 GFLOPS

Board Design

55W

TDP

49W

250 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x HDMI 1.4a 1x VGA

None

Power Connectors

None

Graphics Processor

Cape Verde

GPU Name

GK208

Cape Verde PRO

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

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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