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Written by Bruce Normann   
Tuesday, 13 October 2009
Table of Contents: Page Index
ATI Radeon HD5770 Juniper GPU Video Card
Radeon HD5770 Features
Radeon HD5770 Specifications
Closer Look: Radeon HD 5770
Radeon HD5770 Detailed Features
ATI Eyefinity Multi-Monitors
Video Card Testing Methodology
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
ATI Radeon HD5770 Temperature
VGA Power Consumption
Radeon HD5770 Final Thoughts
ATI Radeon HD5770 Conclusion

Radeon HD5770 Specifications

I mentioned in the introduction that the HD5770 had hardware specs somewhere between an HD4870 and an HD4890. You can see them in detail a little further below. The real story is how ATI has been able to reduce the cost of the HD5700 platform to below the HD4850. What, you say...you sneaked a peek at the end and saw the launch price? Well, launch price, and the price one year after launch are two different things, altogether. For now, look at where the four versions of the HD5000 series end up relative to their forefathers. And remember, this is all based on launch pricing...

ATI_Radeon_HD5770_48-58_Progression.jpg

Now let's look at the actual HD5770 specs in detail:

Radeon HD5770 Speeds & Feeds

  • Engine clock speed: 850 MHz
  • Processing power (single precision): 1.36 TeraFLOPS
  • Polygon throughput: 850M polygons/sec
  • Data fetch rate (32-bit): 136 billion fetches/sec
  • Texel fill rate (bilinear filtered): 34 Gigatexels/sec
  • Pixel fill rate: 13.6 Gigapixels/sec
  • Anti-aliased pixel fill rate: 54.4 Gigasamples/sec
  • Memory clock speed: 1.2 GHz
  • Memory data rate: 4.8 Gbps
  • Memory bandwidth: 76.8 GB/sec
  • Maximum board power: 108 Watts
  • Idle board power: 18 Watts

Although this review is for the HD5770, the HD5750 is being released at the same time and the two cards are based on the same silicon. The HD5750 is likely built with chips that didn't meet the top clock spec, and/or had a defect that killed one of the stream processor units. As anyone who has followed the AMD product line knows, modern processors are designed with the capability of disabling portions of the die. Sometimes, it's done because there are defects on the chip (usually a small particle of dust that ruins a transistor) and all the internal sections don't pass testing. Sometimes it's done with perfectly good chips because the manufacturer needs to meet production requirements for lower cost market segments.

ATI_Radeon_HD5770_Series_Specs.jpg

It's aways a delicate balance between economies of scale (building massive quantities of only one part) and the fact that you can usually meet the requirements for the lower priced product with a cheaper part. ATI has all the bases covered in this latest series of product launches; they've got the more expensive chips in the HD5800 series and the much cheaper, half-size chips in the HD5700 series. Within each series, they've got reduced spec versions that ensure that they make the most of the manufacturing yields that TSMC is able to achieve at the 40nm process node.



 

Comments 

 
# low scores on ati 5770 xfrire configronald jan 2010-11-27 20:47
# Low Scores on ati 5770 xfire ? ronald 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.

Specs:

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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# answered...BruceBruce 2010-11-27 20:59
in the CrossFireX article.
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