Shot of the card with the heatsink taken off – the HD 7870/7850 uses a conventional 256bit GDDR5 memory design with eight Hynix BGA modules clocked at 1.2GHz

P1040691 AMD Radeon HD 7870 and HD 7850 Review

The Pitcairn die is rotated 45 degrees and is slightly depressed below a surrounding metal shim

P1040693 AMD Radeon HD 7870 and HD 7850 Review

 

2 x 6 Pin PCIe power connectors HD 7870 (1 x 6 pin for the HD7850)

P1040697 AMD Radeon HD 7870 and HD 7850 Review

 

Only a single CrossFireX connector is present on the board, which means only up to dual cards (instead of quad) in a multi-GPU rig. The dual bios switch from the HD 69xx/79xx cards is also missing, deterring exotic modding ventures.

P1040707 AMD Radeon HD 7870 and HD 7850 Review

 

CHiL CHL8225G Digital PWM which can drive up to 5 phases and voltage be software controlled

P1040699 AMD Radeon HD 7870 and HD 7850 Review

 

Power Circuitry – 5 phases of Renasas 20658 DrMOS with Pulse PA2080 inductors

P1040701 AMD Radeon HD 7870 and HD 7850 Review

 

Heatsink assembly with the plastic shroud taken off

P1040719 AMD Radeon HD 7870 and HD 7850 Review

 

Sticky thermal pads for the rams

P1040711 AMD Radeon HD 7870 and HD 7850 Review

 

The actual heatpipe heatsink

P1040714 AMD Radeon HD 7870 and HD 7850 Review

75mm PWM enabled Foxconn PVB070G12N blower rated at 2A @ 12v and 5000+rpm

P1040716 AMD Radeon HD 7870 and HD 7850 Review