NVIDIA GeForce GT 645 OEM vs ATI Radeon HD 5970

VS

NVIDIA GeForce GT 645 OEM

ATI Radeon HD 5970

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GT 645 OEM and 1024MB VRAM ATI Radeon HD 5970 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 645 OEM 's Advantages

Released 2 years and 5 months late

Lower TDP (102W vs 294W)

ATI Radeon HD 5970 's Advantages

Larger VRAM bandwidth (128.0GB/s vs 91.87GB/s)

1312 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 645 OEM

0.894 TFLOPS

ATI Radeon HD 5970 +159%

2.32 TFLOPS

GeForce GT 645 OEM

VS

ATI Radeon HD 5970

Graphics Card

Apr 2012

Release Date

Nov 2009

GeForce 600

Generation

Evergreen

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

957 MHz

Memory Clock

1000 MHz

Memory

1024MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

192bit

Memory Bus

256bit

91.87GB/s

Bandwidth

128.0GB/s

Render Config

-

Compute Units

20

6

SM Count

-

288

Shading Units

1600

48

TMUs

80

24

ROPs

32

-

64 KB (per SM)

L1 Cache

8 KB (per CU)

384 KB

L2 Cache

512 KB

-

Theoretical Performance

9.312 GPixel/s

Pixel Rate

23.20 GPixel/s

37.25 GTexel/s

Texture Rate

58.00 GTexel/s

-

894.0 GFLOPS

FP32 (float)

2.320 TFLOPS

74.50 GFLOPS

FP64 (double)

464.0 GFLOPS

Board Design

102W

TDP

294W

300 W

Suggested PSU

600 W

2x DVI 1x mini-HDMI 1.3a

Outputs

2x DVI 1x mini-DisplayPort 1.1

-

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

GF114

GPU Name

Hemlock

-

GPU Variant

Hemlock XT (215-0735075)

Fermi 2.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

1.95 billion

Transistors

2.154 billion

332 mm²

Die Size

334 mm²

Graphics Features

12 (11_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

1.1

OpenCL

1.2

N/A

Vulkan

N/A

2.1

CUDA

-

5.1

Shader Model

5.0

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