AMD Radeon HD 6770 vs AMD Radeon R9 390 X2

VS

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6770 and 8GB VRAM Radeon R9 390 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6770 's Advantages

Lower TDP (108W vs 580W)

AMD Radeon R9 390 X2 's Advantages

Released 4 years and 8 months late

More VRAM (8GB vs 1GB)

Larger VRAM bandwidth (345.6GB/s vs 76.80GB/s)

1760 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6770

1.36 TFLOPS

Radeon R9 390 X2 +276%

5.12 TFLOPS

Radeon HD 6770

VS

Radeon R9 390 X2

Graphics Card

Jan 2011

Release Date

Sep 2015

Northern Islands

Generation

Pirate Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1200 MHz

Memory Clock

1350 MHz

Memory

1024MB

Memory Size

8GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

512bit

76.80GB/s

Bandwidth

345.6GB/s

Render Config

-

SM Count

-

10

Compute Units

40

800

Shading Units

2560

40

TMUs

160

16

ROPs

64

-

Tensor Cores

-

RT Cores

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

1024 KB

Theoretical Performance

13.60 GPixel/s

Pixel Rate

64.00 GPixel/s

34.00 GTexel/s

Texture Rate

160.0 GTexel/s

-

FP16 (half)

-

1360 GFLOPS

FP32 (float)

5.120 TFLOPS

-

FP64 (double)

640.0 GFLOPS

Graphics Processor

Juniper

GPU Name

Grenada

Juniper XT (215-0754013)

GPU Variant

Grenada PRO (215-0880030)

TeraScale 2

Architecture

GCN 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.04 billion

Transistors

6.2 billion

166 mm²

Die Size

438 mm²

Board Design

108W

TDP

580W

300 W

Suggested PSU

950 W

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

Outputs

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

1x 6-pin

Power Connectors

4x 8-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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