AMD Radeon R7 250 vs NVIDIA GeForce GT 640 OEM

VS

AMD Radeon R7 250

NVIDIA GeForce GT 640 OEM

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

Main Differences

AMD Radeon R7 250 's Advantages

Released 1 years and 6 months late

Larger VRAM bandwidth (28.80GB/s vs 28.51GB/s)

128 additional rendering cores

NVIDIA GeForce GT 640 OEM 's Advantages

More VRAM (2GB vs 1024GB)

Lower TDP (50W vs 55W)

Score

Benchmark

FP32 (float)

Radeon R7 250 +17%

0.717 TFLOPS

GeForce GT 640 OEM

0.612 TFLOPS

Radeon R7 250

VS

GeForce GT 640 OEM

Graphics Card

Oct 2013

Release Date

Apr 2012

Volcanic Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

900 MHz

Memory Clock

891 MHz

Memory

1024MB

Memory Size

2GB

DDR3

Memory Type

DDR3

128bit

Memory Bus

128bit

28.80GB/s

Bandwidth

28.51GB/s

Render Config

8

Compute Units

-

512

Shading Units

384

32

TMUs

32

16

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

11.20 GPixel/s

Pixel Rate

6.376 GPixel/s

22.40 GTexel/s

Texture Rate

25.50 GTexel/s

-

716.8 GFLOPS

FP32 (float)

612.1 GFLOPS

44.80 GFLOPS

FP64 (double)

25.50 GFLOPS

Board Design

55W

TDP

50W

250 W

Suggested PSU

250 W

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

Outputs

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

None

Power Connectors

None

Graphics Processor

Cape Verde

GPU Name

GK107

Cape Verde PRO

GPU Variant

GK107-320-A2

GCN 1.0

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.5 billion

Transistors

1.27 billion

123 mm²

Die Size

118 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

3.0

5.1

Shader Model

5.1

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