AMD Radeon HD 6990 vs NVIDIA GeForce GTX 980 Ti

VS

AMD Radeon HD 6990

NVIDIA GeForce GTX 980 Ti

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6990 and 6GB VRAM GeForce GTX 980 Ti to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 980 Ti 's Advantages

Released 4 years and 3 months late

Boost Clock1076MHz

More VRAM (6GB vs 2GB)

Larger VRAM bandwidth (336.6GB/s vs 160.0GB/s)

1280 additional rendering cores

Lower TDP (250W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 6990

2.55 TFLOPS

GeForce GTX 980 Ti +137%

6.06 TFLOPS

Radeon HD 6990

VS

GeForce GTX 980 Ti

Graphics Card

Mar 2011

Release Date

Jun 2015

Northern Islands

Generation

GeForce 900

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

1000 MHz

-

Boost Clock

1076 MHz

1250 MHz

Memory Clock

1753 MHz

Memory

2GB

Memory Size

6GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

384bit

160.0GB/s

Bandwidth

336.6GB/s

Render Config

24

Compute Units

-

1536

Shading Units

2816

96

TMUs

176

32

ROPs

96

-

8 KB (per CU)

L1 Cache

48 KB (per SMM)

512 KB

L2 Cache

3 MB

-

Theoretical Performance

26.56 GPixel/s

Pixel Rate

103.3 GPixel/s

79.68 GTexel/s

Texture Rate

189.4 GTexel/s

-

2.550 TFLOPS

FP32 (float)

6.060 TFLOPS

637.4 GFLOPS

FP64 (double)

189.4 GFLOPS

Board Design

375W

TDP

250W

750 W

Suggested PSU

600 W

1x DVI 4x mini-DisplayPort 1.2

Outputs

1x DVI 1x HDMI 2.0 3x DisplayPort 1.4a

2x 8-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Antilles

GPU Name

GM200

Antilles XT (215-0807027)

GPU Variant

GM200-310-A1

TeraScale 3

Architecture

Maxwell 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

2.64 billion

Transistors

8 billion

389 mm²

Die Size

601 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (12_1)

4.4

OpenGL

4.6

1.2

OpenCL

3.0

N/A

Vulkan

1.3

-

CUDA

5.2

5.0

Shader Model

6.4

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