ATI Radeon HD 3870 AGP vs AMD Radeon HD 8770 OEM

VS

ATI Radeon HD 3870 AGP

AMD Radeon HD 8770 OEM

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3870 AGP and 1024MB VRAM Radeon HD 8770 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8770 OEM 's Advantages

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (96.00GB/s vs 72.06GB/s)

576 additional rendering cores

Lower TDP (85W vs 106W)

Score

Benchmark

FP32 (float)

Radeon HD 3870 AGP

0.497 TFLOPS

Radeon HD 8770 OEM +278%

1.882 TFLOPS

Radeon HD 3870 AGP

VS

Radeon HD 8770 OEM

Graphics Card

Unknown

Release Date

Sep 2013

Radeon R600

Generation

Sea Islands

Desktop

Type

Desktop

AGP 8x

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1126 MHz

Memory Clock

1500 MHz

Memory

512MB

Memory Size

1024MB

GDDR4

Memory Type

GDDR5

256bit

Memory Bus

128bit

72.06GB/s

Bandwidth

96.00GB/s

Render Config

4

Compute Units

14

-

320

Shading Units

896

16

TMUs

56

16

ROPs

16

-

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

12.43 GPixel/s

Pixel Rate

16.80 GPixel/s

12.43 GTexel/s

Texture Rate

58.80 GTexel/s

-

497.3 GFLOPS

FP32 (float)

1.882 TFLOPS

99.46 GFLOPS

FP64 (double)

117.6 GFLOPS

Board Design

106W

TDP

85W

300 W

Suggested PSU

250 W

2x DVI 1x S-Video

Outputs

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

1x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

RV670

GPU Name

Bonaire

RV670 XT (215-0708005)

GPU Variant

Bonaire XT (215-0839039)

TeraScale

Architecture

GCN 2.0

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.666 billion

Transistors

2.08 billion

192 mm²

Die Size

160 mm²

Graphics Features

10.1 (10_1)

DirectX

12 (12_0)

3.3 (full) 4.0 (partial)

OpenGL

4.6

N/A

OpenCL

2.0

N/A

Vulkan

1.2

-

4.1

Shader Model

6.3

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