AMD Radeon HD 6750 vs NVIDIA GeForce GT 640

VS

AMD Radeon HD 6750

NVIDIA GeForce GT 640

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6750 and 2GB VRAM GeForce GT 640 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6750 's Advantages

Larger VRAM bandwidth (73.60GB/s vs 28.51GB/s)

336 additional rendering cores

NVIDIA GeForce GT 640 's Advantages

Released 1 years and 5 months late

More VRAM (2GB vs 1024GB)

Lower TDP (65W vs 86W)

Score

Benchmark

FP32 (float)

Radeon HD 6750 +45%

1.008 TFLOPS

GeForce GT 640

0.693 TFLOPS

Radeon HD 6750

VS

GeForce GT 640

Graphics Card

Jan 2011

Release Date

Jun 2012

Northern Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1150 MHz

Memory Clock

891 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

DDR3

128bit

Memory Bus

128bit

73.60GB/s

Bandwidth

28.51GB/s

Render Config

9

Compute Units

-

720

Shading Units

384

36

TMUs

32

16

ROPs

16

-

8 KB (per CU)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

11.20 GPixel/s

Pixel Rate

7.216 GPixel/s

25.20 GTexel/s

Texture Rate

28.86 GTexel/s

-

1008 GFLOPS

FP32 (float)

692.7 GFLOPS

-

FP64 (double)

28.86 GFLOPS

Board Design

86W

TDP

65W

250 W

Suggested PSU

250 W

2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1

Outputs

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

1x 6-pin

Power Connectors

None

Graphics Processor

Juniper

GPU Name

GK107

Juniper LE (215-0754009)

GPU Variant

GK107-300-A2

TeraScale 2

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.04 billion

Transistors

1.27 billion

166 mm²

Die Size

118 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (11_0)

4.4

OpenGL

4.6

1.2

OpenCL

3.0

N/A

Vulkan

1.1

-

CUDA

3.0

5.0

Shader Model

5.1

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