Date: November 23rd, 2009
Article by: Nathan Glentworth (Owner / Head Editor)
Product was submitted by: Sapphire
<--CLICK FOR PRICES ON A HD 5770 VIDEOCARD IN AMERICA
<--CLICK FOR PRICES ON A HD 5770 VIDEOCARD IN CANADA
PRODUCT PICTORIAL & WALKTHROUGH
Let's take a virtual walk around Sapphire's Reference version of ATI's HD5770.
First off we start at this videocard's VPU. Sapphire's use of the 40nm manufactured RV830 core is complimented with a stock clock of 850Mhz core and 1200Mhz DDR5 memory. It's memory subsystem is the main difference other than the core capabilities between it and the HD5870. The HD5870 is 256bit DDR5 and capable of 153.6Mb/sec of bandwidth whereas the HD5770 is 128bit DDR5 and only capable of 76.8Mb/sec.
As mentioned earlier, Sapphire uses the reference cooler from ATI for this model to to be honest, not much more is needed. For a stock option, the cooling potential of this card might result in a decent overclock. Air is channeled through the cooler and out the back of the case via the rear exhaust port. Pushing the air through is a 70mm turbine which is almost silent during normal operation and mildly noticeable during load testing and gaming. Overall, it's a solid cooler and no upgrading should be needed. Even the memory will be exposed to some airflow and should result in a slightly better memory overclock.
The back of the card is simple and unobstructed so that it won't interfere with any motherboard northbridge cooling solutions. Direct temperature testing with an infrared thermometer resulted in a temperature of only 45c on the portion of the card directly under the VPU core. The cooling is definitely doing its job.
The power supplied through the PCI Express slot alone will not power this videocard. You will have to use a 6 pin molex connector from your power supply or you can use the supplied adapter in the hardware kit. Also I need to note the coolers two cool air intakes. Make sure these are unobstructed by wires or cables during operating for proper cooling.
Last but not least in this section is the main connection panel. You have four choices which consist of two DVI, one DisplayPort and one HDMI video connection. There is also the videocard's exhaust vent. Although I wish this would have been a little larger or less obstructed, it should allow enough airflow to cool it during most conditions. During higher loads and automatically increased fan speed, there might be a little too much restriction.