AMD Radeon HD 6850 X2 vs AMD Radeon HD 7790

VS

AMD Radeon HD 6850 X2 AMD Radeon HD 7790

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6850 X2 and 1024MB VRAM Radeon HD 7790 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6850 X2 's Advantages

More VRAM (2GB vs 1GB)

Larger VRAM bandwidth (134.4GB/s vs 96.00GB/s)

64 additional rendering cores

AMD Radeon HD 7790 's Advantages

Released 1 years and 6 months late

Lower TDP (85W vs 254W)

Score

Benchmark

FP32 (float)

Radeon HD 6850 X2

1.536 TFLOPS

Radeon HD 7790 +16%

1.792 TFLOPS

Radeon HD 6850 X2

VS

Radeon HD 7790

Graphics Card

Sep 2011

Release Date

Mar 2013

Northern Islands

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1050 MHz

Memory Clock

1500 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

134.4GB/s

Bandwidth

96.00GB/s

Render Config

-

SM Count

-

12

Compute Units

14

960

Shading Units

896

48

TMUs

56

32

ROPs

16

-

Tensor Cores

-

RT Cores

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

256 KB

Theoretical Performance

25.60 GPixel/s

Pixel Rate

16.00 GPixel/s

38.40 GTexel/s

Texture Rate

56.00 GTexel/s

-

FP16 (half)

-

1.536 TFLOPS

FP32 (float)

1.792 TFLOPS

-

FP64 (double)

112.0 GFLOPS

Graphics Processor

Barts

GPU Name

Bonaire

Barts PRO (215-0798006)

GPU Variant

Bonaire XT (215-0839039)

TeraScale 2

Architecture

GCN 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.7 billion

Transistors

2.08 billion

255 mm²

Die Size

160 mm²

Board Design

254W

TDP

85W

600 W

Suggested PSU

250 W

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

Outputs

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

2x 8-pin

Power Connectors

1x 6-pin

Graphics Features

11.2 (11_0)

DirectX

12 (12_0)

4.4

OpenGL

4.6

1.2

OpenCL

2.0

N/A

Vulkan

1.2

-

CUDA

-

5.0

Shader Model

6.3

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