AMD Radeon HD 6870 vs NVIDIA GeForce GTX 275 PhysX Edition

VS

AMD Radeon HD 6870 NVIDIA GeForce GTX 275 PhysX Edition

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 and 896MB VRAM GeForce GTX 275 PhysX Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6870 's Advantages

Released 8 months late

More VRAM (1024GB vs 896GB)

Larger VRAM bandwidth (134.4GB/s vs 127.0GB/s)

880 additional rendering cores

Lower TDP (151W vs 219W)

Score

Benchmark

FP32 (float)

Radeon HD 6870 +224%

2.016 TFLOPS

GeForce GTX 275 PhysX Edition

0.622 TFLOPS

Radeon HD 6870

VS

GeForce GTX 275 PhysX Edition

Graphics Card

Oct 2010

Release Date

Feb 2010

Northern Islands

Generation

GeForce 200

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1050 MHz

Memory Clock

1134 MHz

Memory

1024MB

Memory Size

896MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

448bit

134.4GB/s

Bandwidth

127.0GB/s

Render Config

-

SM Count

30

14

Compute Units

-

1120

Shading Units

240

56

TMUs

80

32

ROPs

28

-

Tensor Cores

-

RT Cores

-

8 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

224 KB

Theoretical Performance

28.80 GPixel/s

Pixel Rate

17.72 GPixel/s

50.40 GTexel/s

Texture Rate

50.64 GTexel/s

-

FP16 (half)

-

2.016 TFLOPS

FP32 (float)

622.1 GFLOPS

-

FP64 (double)

77.76 GFLOPS

Graphics Processor

Barts

GPU Name

G92B

Barts XT (215-0798000)

GPU Variant

G92-421-B1

TeraScale 2

Architecture

Tesla

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

1.7 billion

Transistors

0.754 billion

255 mm²

Die Size

260 mm²

Board Design

151W

TDP

219W

450 W

Suggested PSU

550 W

2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1

Outputs

2x DVI

2x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Features

11.2 (11_0)

DirectX

11.1 (10_0)

4.4

OpenGL

3.3

1.2

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

1.3

5.0

Shader Model

4.0

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