AMD Radeon HD 7670 OEM vs NVIDIA GeForce GT 645 OEM

VS

AMD Radeon HD 7670 OEM

NVIDIA GeForce GT 645 OEM

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 7670 OEM and 1024MB VRAM GeForce GT 645 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7670 OEM 's Advantages

192 additional rendering cores

Lower TDP (66W vs 102W)

NVIDIA GeForce GT 645 OEM 's Advantages

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (91.87GB/s vs 64.00GB/s)

Score

Benchmark

FP32 (float)

Radeon HD 7670 OEM

0.768 TFLOPS

GeForce GT 645 OEM +16%

0.894 TFLOPS

Radeon HD 7670 OEM

VS

GeForce GT 645 OEM

Graphics Card

Jan 2012

Release Date

Apr 2012

Southern Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

957 MHz

Memory

512MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

192bit

64.00GB/s

Bandwidth

91.87GB/s

Render Config

6

Compute Units

-

SM Count

6

480

Shading Units

288

24

TMUs

48

8

ROPs

24

-

8 KB (per CU)

L1 Cache

64 KB (per SM)

256 KB

L2 Cache

384 KB

-

Theoretical Performance

6.400 GPixel/s

Pixel Rate

9.312 GPixel/s

19.20 GTexel/s

Texture Rate

37.25 GTexel/s

-

768.0 GFLOPS

FP32 (float)

894.0 GFLOPS

-

FP64 (double)

74.50 GFLOPS

Board Design

66W

TDP

102W

250 W

Suggested PSU

300 W

1x DVI 1x DisplayPort 1.1 1x VGA

Outputs

2x DVI 1x mini-HDMI 1.3a

None

Power Connectors

-

Graphics Processor

Turks

GPU Name

GF114

Turks XT (215-0803000)

GPU Variant

-

TeraScale 2

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

0.716 billion

Transistors

1.95 billion

118 mm²

Die Size

332 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (11_0)

4.4

OpenGL

4.6

1.2

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

2.1

5.0

Shader Model

5.1

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