ATI Radeon HD 4770 vs NVIDIA GeForce GTX 275

VS

ATI Radeon HD 4770

NVIDIA GeForce GTX 275

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4770 and 896MB VRAM GeForce GTX 275 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4770 's Advantages

400 additional rendering cores

Lower TDP (80W vs 219W)

NVIDIA GeForce GTX 275 's Advantages

More VRAM (896GB vs 512GB)

Larger VRAM bandwidth (127.0GB/s vs 51.20GB/s)

Score

Benchmark

FP32 (float)

Radeon HD 4770 +42%

0.96 TFLOPS

GeForce GTX 275

0.674 TFLOPS

Radeon HD 4770

VS

GeForce GTX 275

Graphics Card

Apr 2009

Release Date

Jan 2009

Radeon R700

Generation

GeForce 200

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

800 MHz

Memory Clock

1134 MHz

Memory

512MB

Memory Size

896MB

GDDR5

Memory Type

GDDR3

128bit

Memory Bus

448bit

51.20GB/s

Bandwidth

127.0GB/s

Render Config

8

Compute Units

-

SM Count

30

640

Shading Units

240

32

TMUs

80

16

ROPs

28

-

16 KB (per CU)

L1 Cache

-

128 KB

L2 Cache

224 KB

-

Theoretical Performance

12.00 GPixel/s

Pixel Rate

17.72 GPixel/s

24.00 GTexel/s

Texture Rate

50.64 GTexel/s

-

960.0 GFLOPS

FP32 (float)

673.9 GFLOPS

192.0 GFLOPS

FP64 (double)

84.24 GFLOPS

Board Design

80W

TDP

219W

250 W

Suggested PSU

550 W

2x DVI 1x S-Video

Outputs

2x DVI

1x 6-pin

Power Connectors

2x 6-pin

Graphics Processor

RV740

GPU Name

GT200B

RV740 XT (215-0727019)

GPU Variant

G200-105-B3

TeraScale

Architecture

Tesla 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

0.826 billion

Transistors

1.4 billion

137 mm²

Die Size

470 mm²

Graphics Features

10.1 (10_1)

DirectX

11.1 (10_0)

3.3

OpenGL

3.3

1.1

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

1.3

4.1

Shader Model

4.0

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