Mobility Radeon HD 3870 X2 

Released September, 2008
  • 660 MHz
  • 1 GB GDDR3

Benchmarks Real world tests of the Mobility Radeon HD 3870 X2

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

Mobility Radeon HD 3870 X2
563

Features Key features of the Mobility Radeon HD 3870 X2

memory bandwidth Rate at which data can be read from or stored in onboard memory

Mobility Radeon HD 3870 X2
108.8 GB/s
GeForce GTX 680M
115.2 GB/s

pixel rate Number of pixels a graphics card can render to the screen every second

Mobility Radeon HD 3870 X2
21.12 GPixel/s
Mobility Radeon HD 5870
11.2 GPixel/s
GeForce GTX 680M
20.13 GPixel/s

texture rate Speed at which a graphics card can perform texture mapping

Mobility Radeon HD 3870 X2
21.12 GTexel/s
GeForce GTX 680M
80.5 GTexel/s

floating point performance How fast the gpu can crunch numbers

Mobility Radeon HD 3870 X2
844.8 GFLOPS
GeForce GTX 680M
1,932.7 GFLOPS

shading units Subcomponents of the gpu, these run in parallel to enable fast pixel shading

Mobility Radeon HD 3870 X2
640

texture mapping units Built into each gpu, these resize and rotate bitmaps for texturing scenes

Mobility Radeon HD 3870 X2
32

Specifications Full list of technical specs

gpu

GPU brand ATI
GPU name M88
Market Laptop
Clock speed 660 MHz
Is dual GPU Yes
Reference card None

raw performance

Shading units 640
Texture mapping units 32
Render output processors 32
Compute units 8
Pixel rate 21.12 GPixel/s
Texture rate 21.12 GTexel/s
Floating-point performance 844.8 GFLOPS

memory

Memory clock speed 850 MHz
Effective memory clock speed 1,700 MHz
Memory bus 512 bit
Memory 1,024 MB
Memory type GDDR3
Memory bandwidth 108.8 GB/s

noise and power

TDP 110W
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