AMD Radeon HD 6990 vs NVIDIA GeForce GTX 780 Rev. 2

VS

AMD Radeon HD 6990

NVIDIA GeForce GTX 780 Rev. 2

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6990 and 3GB VRAM GeForce GTX 780 Rev. 2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 780 Rev. 2 's Advantages

Released 2 years and 6 months late

Boost Clock902MHz

More VRAM (3GB vs 2GB)

Larger VRAM bandwidth (288.4GB/s vs 160.0GB/s)

768 additional rendering cores

Lower TDP (250W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 6990

2.55 TFLOPS

GeForce GTX 780 Rev. 2 +62%

4.156 TFLOPS

Radeon HD 6990

VS

GeForce GTX 780 Rev. 2

Graphics Card

Mar 2011

Release Date

Sep 2013

Northern Islands

Generation

GeForce 700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

863 MHz

-

Boost Clock

902 MHz

1250 MHz

Memory Clock

1502 MHz

Memory

2GB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

384bit

160.0GB/s

Bandwidth

288.4GB/s

Render Config

24

Compute Units

-

1536

Shading Units

2304

96

TMUs

192

32

ROPs

48

-

8 KB (per CU)

L1 Cache

16 KB (per SMX)

512 KB

L2 Cache

1536 KB

-

Theoretical Performance

26.56 GPixel/s

Pixel Rate

43.30 GPixel/s

79.68 GTexel/s

Texture Rate

173.2 GTexel/s

-

2.550 TFLOPS

FP32 (float)

4.156 TFLOPS

637.4 GFLOPS

FP64 (double)

173.2 GFLOPS

Board Design

375W

TDP

250W

750 W

Suggested PSU

600 W

1x DVI 4x mini-DisplayPort 1.2

Outputs

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

2x 8-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Antilles

GPU Name

GK110B

Antilles XT (215-0807027)

GPU Variant

GK110-300-B1

TeraScale 3

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

2.64 billion

Transistors

7.08 billion

389 mm²

Die Size

561 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (11_1)

4.4

OpenGL

4.6

1.2

OpenCL

3.0

N/A

Vulkan

1.1

-

CUDA

3.5

5.0

Shader Model

5.1

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