AMD Radeon HD 6990 vs NVIDIA GeForce GTX 680 Mac Edition

VS

AMD Radeon HD 6990

NVIDIA GeForce GTX 680 Mac Edition

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6990 and 2GB VRAM GeForce GTX 680 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 680 Mac Edition 's Advantages

Released 2 years and 1 months late

Boost Clock1058MHz

Larger VRAM bandwidth (192.3GB/s vs 160.0GB/s)

Lower TDP (195W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 6990

2.55 TFLOPS

GeForce GTX 680 Mac Edition +27%

3.25 TFLOPS

Radeon HD 6990

VS

GeForce GTX 680 Mac Edition

Graphics Card

Mar 2011

Release Date

Apr 2013

Northern Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

1006 MHz

-

Boost Clock

1058 MHz

1250 MHz

Memory Clock

1502 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

160.0GB/s

Bandwidth

192.3GB/s

Render Config

24

Compute Units

-

1536

Shading Units

1536

96

TMUs

128

32

ROPs

32

-

8 KB (per CU)

L1 Cache

16 KB (per SMX)

512 KB

L2 Cache

512 KB

-

Theoretical Performance

26.56 GPixel/s

Pixel Rate

33.86 GPixel/s

79.68 GTexel/s

Texture Rate

135.4 GTexel/s

-

2.550 TFLOPS

FP32 (float)

3.250 TFLOPS

637.4 GFLOPS

FP64 (double)

135.4 GFLOPS

Board Design

375W

TDP

195W

750 W

Suggested PSU

450 W

1x DVI 4x mini-DisplayPort 1.2

Outputs

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

2x 8-pin

Power Connectors

2x 6-pin

Graphics Processor

Antilles

GPU Name

GK104

Antilles XT (215-0807027)

GPU Variant

GK104-400-A2

TeraScale 3

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

2.64 billion

Transistors

3.54 billion

389 mm²

Die Size

294 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (11_0)

4.4

OpenGL

4.6

1.2

OpenCL

3.0

N/A

Vulkan

1.1

-

CUDA

3.0

5.0

Shader Model

5.1

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