AMD Radeon HD 6770 vs AMD Radeon R7 250 OEM

VS

AMD Radeon HD 6770

AMD Radeon R7 250 OEM

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6770 and 2GB VRAM Radeon R7 250 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6770 's Advantages

Larger VRAM bandwidth (76.80GB/s vs 32.00GB/s)

416 additional rendering cores

AMD Radeon R7 250 OEM 's Advantages

Released 2 years and 9 months late

Boost Clock1050MHz

More VRAM (2GB vs 1024GB)

Lower TDP (65W vs 108W)

Score

Benchmark

FP32 (float)

Radeon HD 6770 +68%

1.36 TFLOPS

Radeon R7 250 OEM

0.806 TFLOPS

Radeon HD 6770

VS

Radeon R7 250 OEM

Graphics Card

Jan 2011

Release Date

Oct 2013

Northern Islands

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

1000 MHz

-

Boost Clock

1050 MHz

1200 MHz

Memory Clock

1000 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

DDR3

128bit

Memory Bus

128bit

76.80GB/s

Bandwidth

32.00GB/s

Render Config

10

Compute Units

6

-

800

Shading Units

384

40

TMUs

24

16

ROPs

8

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

13.60 GPixel/s

Pixel Rate

8.400 GPixel/s

34.00 GTexel/s

Texture Rate

25.20 GTexel/s

-

1360 GFLOPS

FP32 (float)

806.4 GFLOPS

-

FP64 (double)

50.40 GFLOPS

Board Design

108W

TDP

65W

300 W

Suggested PSU

250 W

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

Outputs

1x DVI 1x HDMI 1.4a 1x VGA

1x 6-pin

Power Connectors

None

Graphics Processor

Juniper

GPU Name

Oland

Juniper XT (215-0754013)

GPU Variant

Oland XT (215-0837000)

TeraScale 2

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.04 billion

Transistors

0.95 billion

166 mm²

Die Size

77 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (11_1)

4.4

OpenGL

4.6

1.2

OpenCL

1.2

N/A

Vulkan

1.2

-

5.0

Shader Model

5.1

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