NVIDIA GeForce GTX 275 vs ATI Radeon HD 3850

VS

NVIDIA GeForce GTX 275

ATI Radeon HD 3850

We compared two Desktop platform GPUs: 896MB VRAM GeForce GTX 275 and 512MB VRAM Radeon HD 3850 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 275 's Advantages

Released 1 years and 2 months late

More VRAM (896GB vs 512GB)

Larger VRAM bandwidth (127.0GB/s vs 53.12GB/s)

ATI Radeon HD 3850 's Advantages

80 additional rendering cores

Lower TDP (75W vs 219W)

Score

Benchmark

FP32 (float)

GeForce GTX 275 +57%

0.674 TFLOPS

Radeon HD 3850

0.428 TFLOPS

GeForce GTX 275

VS

Radeon HD 3850

Graphics Card

Jan 2009

Release Date

Nov 2007

GeForce 200

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1134 MHz

Memory Clock

830 MHz

Memory

896MB

Memory Size

512MB

GDDR3

Memory Type

GDDR3

448bit

Memory Bus

256bit

127.0GB/s

Bandwidth

53.12GB/s

Render Config

-

Compute Units

4

30

SM Count

-

240

Shading Units

320

80

TMUs

16

28

ROPs

16

-

224 KB

L2 Cache

256 KB

-

Theoretical Performance

17.72 GPixel/s

Pixel Rate

10.69 GPixel/s

50.64 GTexel/s

Texture Rate

10.69 GTexel/s

-

673.9 GFLOPS

FP32 (float)

427.5 GFLOPS

84.24 GFLOPS

FP64 (double)

85.50 GFLOPS

Board Design

219W

TDP

75W

550 W

Suggested PSU

250 W

2x DVI

Outputs

2x DVI 1x S-Video

2x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

GT200B

GPU Name

RV670

G200-105-B3

GPU Variant

RV670 PRO (215-0708003)

Tesla 2.0

Architecture

TeraScale

TSMC

Foundry

TSMC

55 nm

Process Size

55 nm

1.4 billion

Transistors

0.666 billion

470 mm²

Die Size

192 mm²

Graphics Features

11.1 (10_0)

DirectX

10.1 (10_1)

3.3

OpenGL

3.3 (full) 4.0 (partial)

1.1

OpenCL

N/A

Vulkan

N/A

1.3

CUDA

-

4.0

Shader Model

4.1

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