NVIDIA GeForce GTX TITAN Z vs AMD Radeon HD 6850 X2

VS

NVIDIA GeForce GTX TITAN Z

AMD Radeon HD 6850 X2

We compared two Desktop platform GPUs: 6GB VRAM GeForce GTX TITAN Z and 2GB VRAM Radeon HD 6850 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX TITAN Z 's Advantages

Released 2 years and 8 months late

Boost Clock876MHz

More VRAM (6GB vs 2GB)

Larger VRAM bandwidth (336.0GB/s vs 134.4GB/s)

1920 additional rendering cores

AMD Radeon HD 6850 X2 's Advantages

Lower TDP (254W vs 375W)

Score

Benchmark

FP32 (float)

GeForce GTX TITAN Z +228%

5.046 TFLOPS

Radeon HD 6850 X2

1.536 TFLOPS

GeForce GTX TITAN Z

VS

Radeon HD 6850 X2

Graphics Card

May 2014

Release Date

Sep 2011

GeForce 700

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

705 MHz

Base Clock

-

876 MHz

Boost Clock

-

1750 MHz

Memory Clock

1050 MHz

Memory

6GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

256bit

336.0GB/s

Bandwidth

134.4GB/s

Render Config

-

Compute Units

12

-

2880

Shading Units

960

240

TMUs

48

ROPs

32

-

16 KB (per SMX)

L1 Cache

8 KB (per CU)

1536 KB

L2 Cache

512 KB

-

Theoretical Performance

52.56 GPixel/s

Pixel Rate

25.60 GPixel/s

210.2 GTexel/s

Texture Rate

38.40 GTexel/s

-

5.046 TFLOPS

FP32 (float)

1.536 TFLOPS

1.682 TFLOPS

FP64 (double)

-

Board Design

375W

TDP

254W

750 W

Suggested PSU

600 W

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

Outputs

2x DVI 1x HDMI 1.3a 1x DisplayPort 1.1

2x 8-pin

Power Connectors

2x 8-pin

Graphics Processor

GK110B

GPU Name

Barts

GK110-350-B1

GPU Variant

Barts PRO (215-0798006)

Kepler

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

7.08 billion

Transistors

1.7 billion

561 mm²

Die Size

255 mm²

Graphics Features

12 (11_1)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

3.0

OpenCL

1.2

1.1

Vulkan

N/A

3.5

CUDA

-

5.1

Shader Model

5.0

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