ATI Radeon HD 3850 X3 vs NVIDIA GeForce GTX 275

VS

ATI Radeon HD 3850 X3

NVIDIA GeForce GTX 275

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3850 X3 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 3850 X3 's Advantages

80 additional rendering cores

Lower TDP (145W vs 219W)

NVIDIA GeForce GTX 275 's Advantages

More VRAM (896GB vs 512GB)

Larger VRAM bandwidth (127.0GB/s vs 54.40GB/s)

Score

Benchmark

FP32 (float)

Radeon HD 3850 X3

0.428 TFLOPS

GeForce GTX 275 +57%

0.674 TFLOPS

Radeon HD 3850 X3

VS

GeForce GTX 275

Graphics Card

Unknown

Release Date

Jan 2009

Radeon R600

Generation

GeForce 200

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

850 MHz

Memory Clock

1134 MHz

Memory

512MB

Memory Size

896MB

GDDR3

Memory Type

GDDR3

256bit

Memory Bus

448bit

54.40GB/s

Bandwidth

127.0GB/s

Render Config

4

Compute Units

-

SM Count

30

320

Shading Units

240

16

TMUs

80

16

ROPs

28

-

256 KB

L2 Cache

224 KB

-

Theoretical Performance

10.70 GPixel/s

Pixel Rate

17.72 GPixel/s

10.70 GTexel/s

Texture Rate

50.64 GTexel/s

-

428.2 GFLOPS

FP32 (float)

673.9 GFLOPS

-

FP64 (double)

84.24 GFLOPS

Board Design

145W

TDP

219W

300 W

Suggested PSU

550 W

4x DVI

Outputs

2x DVI

1x 8-pin

Power Connectors

2x 6-pin

Graphics Processor

RV670

GPU Name

GT200B

RV670 PRO (215-0708003)

GPU Variant

G200-105-B3

TeraScale

Architecture

Tesla 2.0

TSMC

Foundry

TSMC

55 nm

Process Size

55 nm

0.666 billion

Transistors

1.4 billion

192 mm²

Die Size

470 mm²

Graphics Features

10.1 (10_1)

DirectX

11.1 (10_0)

3.3 (full) 4.0 (partial)

OpenGL

3.3

N/A

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

1.3

4.1

Shader Model

4.0

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