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ATI Mobility Radeon HD 3870

M88
Graphics Processor
320
Cores
16
TMUs
16
ROPs
512 MB
Memory Size
GDDR3
Memory Type
256 bit
Bus Width
ATI Mobility Radeon HD 3870 Image
The Mobility Radeon HD 3870 was a graphics card by ATI, launched in June 2008. Built on the 55 nm process, and based on the M88 graphics processor, the card supports DirectX 10.1. The M88 graphics processor is an average sized chip with a die area of 192 mm² and 666 million transistors. It features 320 shading units, 16 texture mapping units and 16 ROPs. ATI has placed 512 MB GDDR3 memory on the card, which are connected using a 256-bit memory interface. The GPU is operating at a frequency of 660 MHz, memory is running at 850 MHz.
We recommend the ATI Mobility Radeon HD 3870 for gaming with highest details at resolutions up to, and including, 1280x720.
Its power draw is rated at 55 W maximum. Mobility Radeon HD 3870 is connected to the rest of the system using a PCIe 2.0 x16 interface.

Graphics Processor

GPU Name: M88
Architecture: TeraScale 2
Process Size: 55 nm
Transistors: 666 million
Die Size: 192 mm²

Graphics Card

Released: Jun 4th, 2008
Production Status: End-of-life
Bus Interface: PCIe 2.0 x16

Relative Performance

24%
31%
38%
49%
57%
60%
74%
97%
98%
100%
Mobility Radeon HD 3870
107%
113%
115%
132%
141%
151%
156%
162%
167%
179%
188%
193%
198%
205%
234%
236%
240%
243%
246%
249%
263%
277%
281%
292%
300%
301%
301%
307%
322%
328%
352%
358%
358%
374%
388%
414%
427%
429%
437%
439%
454%
460%
463%
471%
493%
503%
511%
513%
514%
555%
560%
574%
580%
583%
589%
600%
601%
618%
665%
682%
700%
704%
711%
718%
754%
772%
790%
801%
802%
888%
991%
1057%
1063%
1077%
1091%
1106%
1110%
1122%
1127%
1141%
1228%
1244%
1244%
1289%
1407%
1470%
1521%
1666%
1965%
2299%
Based on TPU review data: "Performance Summary" at 1920x1080
Mobility Radeon HD 3870 performance estimated based on architecture, shader count and clocks.

Clock Speeds

GPU Clock: 660 MHz
Memory Clock: 850 MHz
1700 MHz effective

Memory

Memory Size: 512 MB
Memory Type: GDDR3
Memory Bus: 256 bit
Bandwidth: 54.4 GB/s

Render Config

Shading Units: 320
TMUs: 16
ROPs: 16
Compute Units: 4
Pixel Rate: 10.56 GPixel/s
Texture Rate: 10.56 GTexel/s
Floating-point performance: 422.4 GFLOPS

Board Design

TDP: 55 W

Graphics Features

DirectX: 10.1
OpenGL: 3.3
OpenCL: n/a
Shader Model: 4.1

VGA BIOS

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GPU-Z Validation

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Reviews

Our review database contains 2 reviews of the Mobility Radeon HD 3870.

M88 GPU Notes

RV670