AMD · 2008

Mobility Radeon HD 3870 M88-LXT

Memory512 MB128 of 181 in Radeon HD
Power55 W90 of 156 by higher draw in Radeon HD
Shaders320113 of 178 in Radeon HD

Silicon, made visible

Die area is drawn against the largest recorded die in the catalog. Shader dots use a labeled, card-specific ratio so both early and modern GPUs remain legible.

Die size not recorded · 320 shadersDie size not recorded; shader grid shown without scale. Each dot = 4 shaders.320 shadersEach dot = 4 shadersDie size not recorded; shader grid shown without scale

Specifications

Memory

Capacity
512 MB
Type
GDDR3
Bus width
256 bit
Memory clock
850 MHz
Bandwidth
54.4 GB/s

Compute

Shaders
320
TMUs
16
ROPs
16
Pixel fill rate
10.56 GP/s
Texture fill rate
10.56 GT/s

Clocks

Base clock
660 MHz

Board

TDP
55 W
Bus interface
PCIe ×16 2.0
Form factor
mobile

Physical

Codename
RV670
Process
55 nm
Series
Radeon HD
Launch date
June 4, 2008

Not recorded by the source: generation, architecture, transistors and die size, or 6 further fields.

Catalog context

Within its series, the Mobility Radeon HD 3870 M88-LXT ranks 128th of 181 for memory capacity. Its 55 W TDP is within the 75 W PCIe slot-power ceiling.

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Source: Wikipedia, revision 1364362273 · catalog loaded 2026-08-16