NVIDIA GeForce GTX 680 vs AMD Radeon HD 6990

VS

NVIDIA GeForce GTX 680

AMD Radeon HD 6990

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

Main Differences

NVIDIA GeForce GTX 680 's Advantages

Released 1 years late

Boost Clock1058MHz

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

Lower TDP (195W vs 375W)

Score

Benchmark

FP32 (float)

GeForce GTX 680 +27%

3.25 TFLOPS

Radeon HD 6990

2.55 TFLOPS

GeForce GTX 680

VS

Radeon HD 6990

Graphics Card

Mar 2012

Release Date

Mar 2011

GeForce 600

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

1006 MHz

Base Clock

-

1058 MHz

Boost Clock

-

1502 MHz

Memory Clock

1250 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

192.3GB/s

Bandwidth

160.0GB/s

Render Config

-

Compute Units

24

-

1536

Shading Units

1536

128

TMUs

96

32

ROPs

32

-

16 KB (per SMX)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

512 KB

-

Theoretical Performance

33.86 GPixel/s

Pixel Rate

26.56 GPixel/s

135.4 GTexel/s

Texture Rate

79.68 GTexel/s

-

3.250 TFLOPS

FP32 (float)

2.550 TFLOPS

135.4 GFLOPS

FP64 (double)

637.4 GFLOPS

Board Design

195W

TDP

375W

450 W

Suggested PSU

750 W

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

Outputs

1x DVI 4x mini-DisplayPort 1.2

2x 6-pin

Power Connectors

2x 8-pin

Graphics Processor

GK104

GPU Name

Antilles

GK104-400-A2

GPU Variant

Antilles XT (215-0807027)

Kepler

Architecture

TeraScale 3

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

3.54 billion

Transistors

2.64 billion

294 mm²

Die Size

389 mm²

Graphics Features

12 (11_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

3.0

OpenCL

1.2

1.1

Vulkan

N/A

3.0

CUDA

-

5.1

Shader Model

5.0

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