MSI's HD 7770 OC & The XFX HD 7770 Black Edition DD
MSI HD 7770 OC
MSI’s OC Edition looks promising at first glance and we have high expectations for its cooling and overclocking potential but clock speeds are quite disappointing. While we’re used to seeing pre-overclocked cards hitting between 10 and 15 percent above reference spec, MSI has gone ahead with a pathetic 20MHz core overclock on top of the reference card’s 1GHz default speed while the memory clocks remain unchanged. This won’t make one bit of difference in our charts so if you are looking for how this card performs, look no further than the reference HD 7770.
With a pair of top mounted fans, large heatpipes and an end to end aluminum fin array, this card’s heatsink certainly looks impressive. It also causes the fan shroud to extend past the PCB’s edge, making the MSI HD 7770 8 ľ” long or about ˝” more than the reference design.
The backplate on this card sticks to the reference design other than the inclusion of a branded grille area. MSI does however include a mini DisplayPort to Displayport adaptor so three active display outputs are possible provided your monitors support HDMI, DVI and DisplayPort.
XFX HD 7770 Black Edition S Double Dissipation
XFX’s HD 7000-series cards have all received custom treatment in one way or another and their HD 7770 doesn’t escape this fate. Along with four other versions, the Black Edition S Double Dissipation incorporates a specially engineered heatsink as well as some impressive clock speeds of 1120 / 5200. Since this is also part of XFX’s DD lineup, it receives their full Lifetime Warranty provided registration takes place within 30 days of purchase.
The Double Dissipation heatsink is quite extensive for such an efficient card though it doesn’t add to the HD 7770’s reference length of just over 8”. XFX has also equipped it with a small vapor chamber above the core along with a pair of 80mm intake fans.
Along with the logo stamped high airflow bracket, the Black Edition’s backplate sticks to the reference design but XFX has also included a single HDMI to DVI adaptor.
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