NVIDIA GeForce GTX 645 OEM vs ATI Radeon X800 GTO

VS

NVIDIA GeForce GTX 645 OEM

ATI Radeon X800 GTO

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GTX 645 OEM and 128MB VRAM Radeon X800 GTO to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 645 OEM 's Advantages

Released 5 years and 4 months late

More VRAM (1024GB vs 128GB)

Larger VRAM bandwidth (64.00GB/s vs 22.40GB/s)

576 additional rendering cores

ATI Radeon X800 GTO 's Advantages

Lower TDP (49W vs 65W)

Score

GeForce GTX 645 OEM

VS

Radeon X800 GTO

Graphics Card

Apr 2013

Release Date

Dec 2007

GeForce 600

Generation

Radeon R400 PCIe

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

350 MHz

Memory

1024MB

Memory Size

128MB

GDDR5

Memory Type

DDR

128bit

Memory Bus

256bit

64.00GB/s

Bandwidth

22.40GB/s

Render Config

-

576

Shading Units

-

48

TMUs

12

16

ROPs

12

-

16 KB (per SMX)

L1 Cache

-

256 KB

L2 Cache

-

Theoretical Performance

9.888 GPixel/s

Pixel Rate

4.800 GPixel/s

39.55 GTexel/s

Texture Rate

4.800 GTexel/s

-

949.2 GFLOPS

FP32 (float)

-

39.55 GFLOPS

FP64 (double)

-

Board Design

65W

TDP

49W

250 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x VGA 1x S-Video

None

Power Connectors

-

Graphics Processor

GK106

GPU Name

R423

GK106-200-A1

GPU Variant

R423 GTO

Kepler

Architecture

R400

TSMC

Foundry

TSMC

28 nm

Process Size

130 nm

2.54 billion

Transistors

0.16 billion

221 mm²

Die Size

289 mm²

Graphics Features

12 (11_0)

DirectX

9.0b (9_2)

4.6

OpenGL

2.1

3.0

OpenCL

N/A

1.1

Vulkan

N/A

3.0

CUDA

-

5.1

Shader Model

-

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