NVIDIA GeForce GT 645 OEM vs ATI Radeon X550 XT

VS

NVIDIA GeForce GT 645 OEM

ATI Radeon X550 XT

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GT 645 OEM and 128MB VRAM Radeon X550 XT 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 5 years and 3 months late

More VRAM (1024GB vs 128GB)

Larger VRAM bandwidth (91.87GB/s vs 9.600GB/s)

288 additional rendering cores

Score

GeForce GT 645 OEM

VS

Radeon X550 XT

Graphics Card

Apr 2012

Release Date

Jan 2007

GeForce 600

Generation

Radeon R300

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

957 MHz

Memory Clock

300 MHz

Memory

1024MB

Memory Size

128MB

GDDR5

Memory Type

GDDR3

192bit

Memory Bus

128bit

91.87GB/s

Bandwidth

9.600GB/s

Render Config

-

6

SM Count

-

288

Shading Units

-

48

TMUs

4

24

ROPs

4

-

64 KB (per SM)

L1 Cache

-

384 KB

L2 Cache

-

Theoretical Performance

9.312 GPixel/s

Pixel Rate

1.600 GPixel/s

37.25 GTexel/s

Texture Rate

1.600 GTexel/s

-

894.0 GFLOPS

FP32 (float)

-

74.50 GFLOPS

FP64 (double)

-

Board Design

102W

TDP

Unknown

300 W

Suggested PSU

200 W

2x DVI 1x mini-HDMI 1.3a

Outputs

1x DVI 1x VGA 1x S-Video

-

Power Connectors

None

Graphics Processor

GF114

GPU Name

RV410

-

Fermi 2.0

Architecture

R400

TSMC

Foundry

TSMC

40 nm

Process Size

110 nm

1.95 billion

Transistors

0.12 billion

332 mm²

Die Size

156 mm²

Graphics Features

12 (11_0)

DirectX

9.0b (9_2)

4.6

OpenGL

2.0

1.1

OpenCL

N/A

Vulkan

N/A

2.1

CUDA

-

5.1

Shader Model

-

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