NVIDIA GeForce GTX 645 OEM vs ATI Radeon HD 5550

VS

NVIDIA GeForce GTX 645 OEM

ATI Radeon HD 5550

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GTX 645 OEM and 512MB VRAM Radeon HD 5550 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 3 years and 2 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (64.00GB/s vs 51.20GB/s)

256 additional rendering cores

ATI Radeon HD 5550 's Advantages

Lower TDP (39W vs 65W)

Score

Benchmark

FP32 (float)

GeForce GTX 645 OEM +169%

0.949 TFLOPS

Radeon HD 5550

0.352 TFLOPS

GeForce GTX 645 OEM

VS

Radeon HD 5550

Graphics Card

Apr 2013

Release Date

Feb 2010

GeForce 600

Generation

Evergreen

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

800 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

64.00GB/s

Bandwidth

51.20GB/s

Render Config

-

Compute Units

4

-

576

Shading Units

320

48

TMUs

16

ROPs

8

-

16 KB (per SMX)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

9.888 GPixel/s

Pixel Rate

4.400 GPixel/s

39.55 GTexel/s

Texture Rate

8.800 GTexel/s

-

949.2 GFLOPS

FP32 (float)

352.0 GFLOPS

39.55 GFLOPS

FP64 (double)

-

Board Design

65W

TDP

39W

250 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

None

Power Connectors

None

Graphics Processor

GK106

GPU Name

Redwood

GK106-200-A1

GPU Variant

Redwood PRO2

Kepler

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.54 billion

Transistors

0.627 billion

221 mm²

Die Size

104 mm²

Graphics Features

12 (11_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

3.0

OpenCL

1.2

1.1

Vulkan

N/A

3.0

CUDA

-

5.1

Shader Model

5.0

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