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Tuesday, 06 March 2012 08:50

XFX DD Radeon 7750 800M 1GB reviewed - A closer look at DD Radeon 7750

Written by Sanjin Rados


Review: With silent and powerfull Double Dissipation cooler

The card we have today is called XFX DD Radeon 7750 800M 1GB D5 DP HDMI DVI (part number FX-775A-ZDFC). You'll recognize the Double Dissipation Cooler easily - it has two fans. Double Dissipation cooler is two slots wide and its cooling capacity far exceeds the needs of the small Cape Verde Pro chip.

XFX DD Radeon 7750 800M is one of the quietest cards we've tested so far. DD cooler's superiority in cooling Radeon 7750 graphics cards was expected since the cooler was designed to cool overclocked HD 7770 cards.


A bird view glance at the card makes it impossible to tell whether the card is DD Radeon 7770 or DD Radeon 7750. Of course, tilting it will reveal the name, which is written on the top side.


The reference PCB on the Radeon HD 7750 graphics card is shorter than the one on Radeon HD 7770 cards, but XFX uses the same sized PCB for its Radeon 7750 / 7770 cards. This is why the DD cooler can be used on both cards.

That the card is a Radeon HD 7750 is clear from the fact that there is no 6-pin power connector, which can be found on Radeon HD 7770. According to the specs, Radeon HD 7770 cards have a TDP of 80W while Radeon HD 7750's TDP is 55w.



An important part of designing graphics card coolers is supplying enough holes on the cooler so that hot air exits as soon as possible. Furthermore, the holes in the bracket are important with closed, tunnel designs where the fan is at the end of the cooler. XFX's Bracket Design is definitely among the details that will make XFX's cards instantly recognizable.


The XFX logo leaves more room for air exiting but it won't matter much with XFX's DD Radeon 7750 card. Namely, the cooler is open design so air exits all around the card and not only through the holes in the bracket.

Cape Verde Pro won't get to hot so XFX could sacrifice part of the bracked to throw in a second dual-link DVI out.


The I/O panel features two dual-link DVI connectors, DisplayPort 1.2 and HDMI 1.4a. As far as sound goes, HDMI 1.4a provides HD audio and support for Blu-ray 3D movies.

XFX's DD Radeon 7750 will simultaneously support three displays, although the third display will have to go via DisplayPort. XFX opted on standard sized connectors, so there are no additional converters in the box.

XFX DD Radeon 7750 800M card is equipped with 1024MB GDDR5 memory. The GDDR5 memory chips are made by Hynix (model number H5GQ2H24MFR-T2C). They are specified to run at 1250MHz (effective 5000MHz), but on this card the memory runs at 1125MHz. The memory chips have no heatsink and are air cooled, although the cooler's base almost touches them.





The card is 21cm long, and you may combine it with another HD 7750 card from any vendor in CrossFire.


(Page 3 of 7)
Last modified on Tuesday, 06 March 2012 09:07
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