NVIDIA GeForce GT 645 OEM vs ATI Radeon HD 5950

VS

NVIDIA GeForce GT 645 OEM

ATI Radeon HD 5950

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GT 645 OEM and 1024MB VRAM ATI Radeon HD 5950 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 645 OEM 's Advantages

Lower TDP (102W vs 302W)

ATI Radeon HD 5950 's Advantages

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

1152 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 645 OEM

0.894 TFLOPS

ATI Radeon HD 5950 +133%

2.088 TFLOPS

GeForce GT 645 OEM

VS

ATI Radeon HD 5950

Graphics Card

Apr 2012

Release Date

Unknown

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

18

6

SM Count

-

288

Shading Units

1440

48

TMUs

72

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

52.20 GTexel/s

-

894.0 GFLOPS

FP32 (float)

2.088 TFLOPS

74.50 GFLOPS

FP64 (double)

-

Board Design

102W

TDP

302W

300 W

Suggested PSU

700 W

2x DVI 1x mini-HDMI 1.3a

Outputs

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

-

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

GF114

GPU Name

Hemlock

-

GPU Variant

Hemlock PRO

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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