AMD Radeon HD 7990 vs NVIDIA GeForce 8600 GTS Mac Edition

VS

AMD Radeon HD 7990

NVIDIA GeForce 8600 GTS Mac Edition

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7990 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 7990 's Advantages

Released 5 years and 7 months late

Boost Clock1000MHz

More VRAM (3GB vs 512GB)

Larger VRAM bandwidth (288.0GB/s vs 32.26GB/s)

2016 additional rendering cores

NVIDIA GeForce 8600 GTS Mac Edition 's Advantages

Lower TDP (75W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 7990 +4304%

4.096 TFLOPS

GeForce 8600 GTS Mac Edition

0.093 TFLOPS

Radeon HD 7990

VS

GeForce 8600 GTS Mac Edition

Graphics Card

Apr 2013

Release Date

Sep 2007

Southern Islands

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

950 MHz

Base Clock

-

1000 MHz

Boost Clock

-

1500 MHz

Memory Clock

1008 MHz

Memory

3GB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

384bit

Memory Bus

128bit

288.0GB/s

Bandwidth

32.26GB/s

Render Config

32

Compute Units

-

SM Count

4

2048

Shading Units

32

128

TMUs

16

32

ROPs

8

-

16 KB (per CU)

L1 Cache

-

768 KB

L2 Cache

32 KB

-

Theoretical Performance

32.00 GPixel/s

Pixel Rate

5.400 GPixel/s

128.0 GTexel/s

Texture Rate

10.80 GTexel/s

-

4.096 TFLOPS

FP32 (float)

92.80 GFLOPS

1024 GFLOPS

FP64 (double)

-

Board Design

375W

TDP

75W

750 W

Suggested PSU

250 W

1x DVI 4x mini-DisplayPort 1.2

Outputs

2x DVI

2x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

Malta

GPU Name

G84

Malta XT (215-0849026)

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

365 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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