ATI Radeon HD 3470 vs AMD Radeon HD 7870 XT

VS

ATI Radeon HD 3470

AMD Radeon HD 7870 XT

We compared two Desktop platform GPUs: 256MB VRAM Radeon HD 3470 and 2GB VRAM Radeon HD 7870 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 3470 's Advantages

Lower TDP (30W vs 185W)

AMD Radeon HD 7870 XT 's Advantages

Released 4 years and 10 months late

Boost Clock975MHz

More VRAM (2GB vs 256GB)

Larger VRAM bandwidth (192.0GB/s vs 15.20GB/s)

1496 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 3470

0.064 TFLOPS

Radeon HD 7870 XT +4579%

2.995 TFLOPS

Radeon HD 3470

VS

Radeon HD 7870 XT

Graphics Card

Jan 2008

Release Date

Nov 2012

Radeon R600

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

925 MHz

-

Boost Clock

975 MHz

950 MHz

Memory Clock

1500 MHz

Memory

256MB

Memory Size

2GB

GDDR3

Memory Type

GDDR5

64bit

Memory Bus

256bit

15.20GB/s

Bandwidth

192.0GB/s

Render Config

2

Compute Units

24

-

40

Shading Units

1536

4

TMUs

96

4

ROPs

32

-

L1 Cache

16 KB (per CU)

64 KB

L2 Cache

512 KB

-

Theoretical Performance

3.200 GPixel/s

Pixel Rate

31.20 GPixel/s

3.200 GTexel/s

Texture Rate

93.60 GTexel/s

-

64.00 GFLOPS

FP32 (float)

2.995 TFLOPS

-

FP64 (double)

748.8 GFLOPS

Board Design

30W

TDP

185W

200 W

Suggested PSU

450 W

1x DVI 1x VGA 1x S-Video

Outputs

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

None

Power Connectors

2x 6-pin

Graphics Processor

RV620

GPU Name

Tahiti

RV620 PRO (215-0670006)

GPU Variant

Tahiti LE (215-0821122)

TeraScale

Architecture

GCN 1.0

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.181 billion

Transistors

4.313 billion

67 mm²

Die Size

352 mm²

Graphics Features

10.1 (10_1)

DirectX

12 (11_1)

3.3

OpenGL

4.6

N/A

OpenCL

1.2

N/A

Vulkan

1.2

-

4.1

Shader Model

5.1

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