Radeon HD 3870 

Released January, 2008
  • 825 MHz
  • 512 MB GDDR4

Features Key features of the Radeon HD 3870

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

Radeon HD 3870
76.8 GB/s
Radeon HD 5450
6.4 GB/s
GeForce GT 9800
57.6 GB/s

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

Radeon HD 3870
13.2 GPixel/s
Radeon HD 5450
2.6 GPixel/s
GeForce GT 9800
9.6 GPixel/s

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

Radeon HD 3870
13.2 GTexel/s
GeForce GT 9800
33.6 GTexel/s
Radeon HD 5450
5.2 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 3870
528 GFLOPS
Radeon HD 5450
104 GFLOPS
GeForce GT 9800
336 GFLOPS

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

Radeon HD 3870
320

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

Radeon HD 3870
16

Reviews Word on the street for the Radeon HD 3870

Specifications Full list of technical specs

gpu

GPU brand ATI
GPU name RV670 XT
Market Desktop
Clock speed 825 MHz
Is dual GPU No
Reference card ATi Radeon HD 3870 777 MHz 512 MB

raw performance

Shading units 320
Texture mapping units 16
Render output processors 16
Compute units 4
Pixel rate 13.2 GPixel/s
Texture rate 13.2 GTexel/s
Floating-point performance 528 GFLOPS

memory

Memory clock speed 1,200 MHz
Effective memory clock speed 2,400 MHz
Memory bus 256 bit
Memory 512 MB
Memory type GDDR4
Memory bandwidth 76.8 GB/s

noise and power

TDP 106W
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