AMD Radeon HD 7870 XT vs NVIDIA GeForce 8600 GTS Mac Edition

VS

AMD Radeon HD 7870 XT

NVIDIA GeForce 8600 GTS Mac Edition

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 XT and 512MB VRAM GeForce 8600 GTS Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7870 XT 's Advantages

Released 5 years and 2 months late

Boost Clock975MHz

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (192.0GB/s vs 32.26GB/s)

1504 additional rendering cores

NVIDIA GeForce 8600 GTS Mac Edition 's Advantages

Lower TDP (75W vs 185W)

Score

Benchmark

FP32 (float)

Radeon HD 7870 XT +3120%

2.995 TFLOPS

GeForce 8600 GTS Mac Edition

0.093 TFLOPS

Radeon HD 7870 XT

VS

GeForce 8600 GTS Mac Edition

Graphics Card

Nov 2012

Release Date

Sep 2007

Southern Islands

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

925 MHz

Base Clock

-

975 MHz

Boost Clock

-

1500 MHz

Memory Clock

1008 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

128bit

192.0GB/s

Bandwidth

32.26GB/s

Render Config

24

Compute Units

-

SM Count

4

1536

Shading Units

32

96

TMUs

16

32

ROPs

8

-

16 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

32 KB

-

Theoretical Performance

31.20 GPixel/s

Pixel Rate

5.400 GPixel/s

93.60 GTexel/s

Texture Rate

10.80 GTexel/s

-

2.995 TFLOPS

FP32 (float)

92.80 GFLOPS

748.8 GFLOPS

FP64 (double)

-

Board Design

185W

TDP

75W

450 W

Suggested PSU

250 W

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

Outputs

2x DVI

2x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

Tahiti

GPU Name

G84

Tahiti LE (215-0821122)

GPU Variant

G84-400-A2

GCN 1.0

Architecture

Tesla

TSMC

Foundry

TSMC

28 nm

Process Size

80 nm

4.313 billion

Transistors

0.289 billion

352 mm²

Die Size

169 mm²

Graphics Features

12 (11_1)

DirectX

11.1 (10_0)

4.6

OpenGL

3.3

1.2

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

1.1

5.1

Shader Model

4.0

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