NVIDIA GeForce GTX 780 Ti Engineering Sample vs AMD Radeon HD 6990

VS

NVIDIA GeForce GTX 780 Ti Engineering Sample

AMD Radeon HD 6990

We compared two Desktop platform GPUs: 3GB VRAM GeForce GTX 780 Ti Engineering Sample 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 780 Ti Engineering Sample 's Advantages

Boost Clock928MHz

More VRAM (3GB vs 2GB)

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

1344 additional rendering cores

Lower TDP (250W vs 375W)

Score

Benchmark

FP32 (float)

GeForce GTX 780 Ti Engineering Sample +109%

5.345 TFLOPS

Radeon HD 6990

2.55 TFLOPS

GeForce GTX 780 Ti Engineering Sample

VS

Radeon HD 6990

Graphics Card

Unknown

Release Date

Mar 2011

GeForce 700

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

875 MHz

Base Clock

-

928 MHz

Boost Clock

-

1753 MHz

Memory Clock

1250 MHz

Memory

3GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

256bit

336.6GB/s

Bandwidth

160.0GB/s

Render Config

-

Compute Units

24

-

2880

Shading Units

1536

240

TMUs

96

48

ROPs

32

-

16 KB (per SMX)

L1 Cache

8 KB (per CU)

1536 KB

L2 Cache

512 KB

-

Theoretical Performance

55.68 GPixel/s

Pixel Rate

26.56 GPixel/s

222.7 GTexel/s

Texture Rate

79.68 GTexel/s

-

5.345 TFLOPS

FP32 (float)

2.550 TFLOPS

222.7 GFLOPS

FP64 (double)

637.4 GFLOPS

Board Design

250W

TDP

375W

600 W

Suggested PSU

750 W

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

Outputs

1x DVI 4x mini-DisplayPort 1.2

1x 6-pin + 1x 8-pin

Power Connectors

2x 8-pin

Graphics Processor

GK180

GPU Name

Antilles

GK180-425-A1

GPU Variant

Antilles XT (215-0807027)

Kepler

Architecture

TeraScale 3

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

7.08 billion

Transistors

2.64 billion

561 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

1.2.175

Vulkan

N/A

3.5

CUDA

-

5.1

Shader Model

5.0

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