AMD Radeon HD 7770 XT 1GB Graphics Card Review

Looking at the 7770 XT as a whole, in comparison to the 7750, it follows the look of a more performance orientated card with its plastic surround to the heatsink that covers the entire of the board.  The card is slightly longer than that of the 7750 at around 2-3 inches extra.

Unlike the 7750 Pro that can take all of its power from the PCI-express lane, the 7770 does require extra power.  Here we see a single 6-pin power connection located on the end of the card.

The 7770 here does support CrossFireX albeit only in a 2 way configuration, so naturally we find a single CrossFireX connector on the top of the card.

On the rear of the card we find dual-link DVI, HDMI and two mini DisplayPorts, which will have support for upto six displays when connected to a DisplayPort hub or by daisy chaining a series of DisplayPort 1.2 enabled screens. Above this with the card coming in a dual slot configuration, we find a grill for heat dissipation out of the chassis.

Taking the cooler off the card, its surprising to see so much space spare under the cover. None the less we can see that like the 7750, the 7770 heatsink only makes contact with the GPU core itself and the memory ICs are left to cool direct to air.

At the heart of the 7770 we find the Cape Verde GPU core surrounded by 1GB of GDDR5 memory clocked at 1125MHz (4.5GHz effective).

Like the 7750, we see the 28nm Cape Verde GPU core lying at the heart of the card. As we have pointed out before, the GPU core here comes with the worlds first 1GHz stock clock speed.

GPU-Z again reiterates the 1GHz core clock speed and from this we can potentially see overclocks reaching towards the 1100MHz barrier on this card.