AMD Radeon HD 7870 GHz Edition vs NVIDIA GeForce GTX 555 OEM

VS

AMD Radeon HD 7870 GHz Edition

NVIDIA GeForce GTX 555 OEM

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 GHz Edition and 1024MB VRAM GeForce GTX 555 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7870 GHz Edition 's Advantages

Released 10 months late

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (153.6GB/s vs 91.87GB/s)

992 additional rendering cores

NVIDIA GeForce GTX 555 OEM 's Advantages

Lower TDP (150W vs 175W)

Score

Benchmark

FP32 (float)

Radeon HD 7870 GHz Edition +201%

2.56 TFLOPS

GeForce GTX 555 OEM

0.848 TFLOPS

Radeon HD 7870 GHz Edition

VS

GeForce GTX 555 OEM

Graphics Card

Mar 2012

Release Date

May 2011

Southern Islands

Generation

GeForce 500

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1200 MHz

Memory Clock

957 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

192bit

153.6GB/s

Bandwidth

91.87GB/s

Render Config

20

Compute Units

-

SM Count

6

1280

Shading Units

288

80

TMUs

48

32

ROPs

24

-

16 KB (per CU)

L1 Cache

64 KB (per SM)

512 KB

L2 Cache

384 KB

-

Theoretical Performance

32.00 GPixel/s

Pixel Rate

8.832 GPixel/s

80.00 GTexel/s

Texture Rate

35.33 GTexel/s

-

2.560 TFLOPS

FP32 (float)

847.9 GFLOPS

160.0 GFLOPS

FP64 (double)

70.66 GFLOPS

Board Design

175W

TDP

150W

450 W

Suggested PSU

450 W

1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2

Outputs

2x DVI 1x mini-HDMI 1.3a

2x 6-pin

Power Connectors

2x 6-pin

Graphics Processor

Pitcairn

GPU Name

GF114

Pitcairn XT (215-0828047)

GPU Variant

GF114-200-KB-A1

GCN 1.0

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.8 billion

Transistors

1.95 billion

212 mm²

Die Size

332 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.2

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

2.1

5.1

Shader Model

5.1

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