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Radeon HD 5770 CrossFireX Performance Scaling E-mail
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Written by Bruce Normann   
Tuesday, 24 November 2009
Table of Contents: Page Index
Radeon HD 5770 CrossFireX Performance Scaling
ATI Radeon HD5770 Features
Radeon HD5770 Specifications
Closer Look: Radeon HD 5770
Radeon HD5770 Detailed Features
ATI Eyefinity Multi-Monitors
Video Card Testing Methodology
CrossFireX and the Radeon HD5770
3DMark Vantage Benchmarks
Crysis Benchmark Results
Devil May Cry 4 Benchmark
Far Cry 2 Benchmarks
Resident Evil 5 Benchmarks
World in Conflict Benchmarks
BattleForge - Renegade Benchmarks
Unigine - Heaven Benchmark Results
Radeon HD5770 CrossFireX Temperature
VGA Power Consumption
Radeon HD5770 CrossFireX Final Thoughts
Radeon HD5770 CrossFireX Conclusion

Closer Look: Radeon HD5770

The HD 5770 follows the general design of the HD5850 card, only on a slightly smaller scale. The card is only 220 mm long (8.63"), which means it will fit into most any case without an issue. The signature red blower wheel, sourced from Delta is there, pushing air through a finned heatsink block that sits on top of the GPU, and out the back of the card through the small set of vents on the I/O plate. The reference design cooler also provides a large expanse of real estate for ATI's retail partners to display their branding.


The collection of I/O ports on the dual-width rear panel of the card is consistent across the entire HD5xxx family at this point: two DVI, one HDMI and one DisplayPort connector. This doesn't leave much room for the exhaust vents, but if ATI can keep the HD5800 series cool with the same design, the half-size HD5700 series GPU should be fine. The housing is a one-piece plastic affair, and removes easily. The external appearance hints at a simplistic design; it looks like a cover and nothing more. Once we look inside, that impression will be laid to rest.


The far end of the card showcases the new "hood scoop" design that is carried over from the high end ATI cards. They don't feed a lot of air into the blower, but if you look closely at the back side of the fan housing in the image after next, you should see some vents on the back side that do feed air into the center of the squirrel cage blower wheel. So, the HD5770 has an extra trick up its sleeve, compared to the HD58xx series, which use a different blower housing. This provides some ventilation for most of the power supply components located at the far end of the card. Power supply + ventilation is always a good thing. The red racing graphics on the top edge is both decorative and functional, as there are some additional vents molded in there.


Popping off the cover reveals a deceptively simple, ducted heat sink with a copper base and tightly spaced aluminum fins. The blower is thinner than the units in the HD5800 series, but follows the same format. A portion of the duct opens up to the case by way of some vents in the top rail, molded here in red. Clearly, the majority of the air is meant to exhaust through the I/O plate, but it never hurts to have a backup plan.


For most high-end video cards, the cooling system is an integral part of the performance envelope for the card. Make it run cooler, and you can make it run faster is the byword for achieving gaming-class performance from the latest and greatest GPUs. Even though the HD5770 is a mid-range card with a small GPU die size, it's still a gaming product and will be pushed to maximum performance levels by most potential customers. We'll be looking at cooling performance later on, to see how well the cooler design holds up under the strain of GPU overclocks.


The back of the Radeon HD5770 is bare, which is normal for a card in this market segment. The main features to be seen here are the metal cross-brace for the GPU heatsink screws, which are spring loaded, and the four Hynix GDDR5 memory chips on the back side. They are mounted back-to-back with four companion chips on the top side of the board. Together, they make up the full 1GB of memory contained on this card.

Now, let's peek under the covers and have a good look at what's inside the Radeon HD5770.



# Low Scores on ati 5770 xfireronald jan 2010-11-27 20:43
i cant seem to know the problem with my set up why im getting a low scores on benchmark test with re5 using ati 5770 GPU.

scores with the same set-up: 1920 x 1200 with all settings were max out 8xAA was only 24.1fps with the single card and 42.1 fps with crossfire setup.


GPU: Sapphire ATI 5770 Vapor X crossfire config with 1 crossfire cable connected
Proci: thuban 1090t h50 water cooled
mobo: msi 790gx-65g
hdd: samsung 500gb 7200rpm 3.5
mem: ocz obsidian dd3 1600mhz 4GB ( 2by2Gb)
PSU: thermaltake litepower 600w
Monitor: Sony 32in bravia lcd TV
software: dx 11 cat 10.11 win 7

can somebody please help..could it be some components maybe bottleneck?
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# TV is max 1080pBruceBruce 2010-11-27 20:57
I don't know of any Sony Bravia TVs that will display 1920 x 1200. The newest ones will max out at 1920 x 1080. If you have the video card trying to drive this TV with 1920 x 1200, either the TV or the video card is probably freaking out. Try setting the video resolution to 1920 x 1080 if you have one of the newer 1080p TVs. If it's am older unit it's 720P and 1366 x 768 pixels.
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# SameDmennis 2010-12-12 19:40
Ronald ren i have the xfx video cards running in xfire and the same msi motherboard and a 600watt ocz PSU, and i too have the same issue. No matter what game i am running (is playable in crossfire) it seems i get slower performance in crossfire and my single radeon 5770 runs faster. i know with t that mobo it is a 16x lane but when ran in crossfirex it will make the cards 8x X 8x in their respective lanes. Have you ever resolved the issue? I can't figure it out.
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