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  1. #1
    Registered User adrianlee's Avatar
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    HD5770 & HD5750 reviews

    Mainstream Attack - The ATI Radeon HD 5770 :: Articles :: www.hardwarezone.com
    AnandTech: AMD’s Radeon HD 5770 & 5750: DirectX 11 for the Mainstream Crowd
    XFX Radeon HD 5750 1GB GDDR5 Review
    XFX Radeon HD 5770 1GB GDDR5 Review
    ASUS Radeon HD 5770 1GB Voltage Tweak Edition Review
    Elite Bastards - Sapphire Radeon HD 5770 1GB and Radeon HD 5750 1GB video card review
    Introduction - AMD ATI Radeon HD 5770 and HD 5750 Review | [H]ard|OCP
    ATI Radeon HD 5770/5750 Performance Preview
    Radeon HD 5770 review
    ATI Radeon HD 5770 and 5750 Mainstream DX11 GPUs - HotHardware
    HEXUS.net - Review :: Mid-range machinations: AMD's Sapphire Radeon HD 5770 and HD 5750 GPUs : Page - 1/19
    HEXUS.net - Review :: Double trouble: Sapphire Radeon HD 5770 in CrossFireX : Page - 1/11
    Legion Hardware
    HD 5750 & HD 5770 Review - Page 1 - PC gaming is not too expensive
    techPowerUp :: HIS Radeon HD 5770 1 GB Review :: Page 1 / 34
    PC Perspective - AMD Radeon HD 5770 and HD 5750 Review - Juniper and DX11 for all
    Ati Radeon HD 5770 reviewed: DirectX 11 Mid-Range - Radeon HD 5770, Test, Review, DirectX 11, Benchmark, Graphics Card - PC Games Hardware
    Sapphire Radeon HD 5770 1GB Video Card Introduction :: TweakTown
    HIS Radeon HD 5850 Review - TechSpot
    ATI Radeon HD 5770 Review - TechSpot
    Radeon HD 5770 And 5750 Review: Gentlemen, Start Your HTPCs : Introduction - Review Tom's Hardware
    XFX & Sapphire Radeon 5750 and 5770 - Introduction - DriverHeaven.net
    Sapphire HD 5770 - Bjorn3D.com
    Asus EAH5770 Voltage Tweak - Bjorn3D.com
    Techgage - ATI Radeon HD 5770 - DirectX 11 for the Masses
    [Phoronix] AMD Radeon HD 5750/5770 Review
    Sapphire Radeon HD 5750 Graphics Card | Modders-Inc.com | Case Mods and Computer Hardware Reviews
    PowerColor HD5770 Review - Overclockers Club
    XFX HD 5750 Review - Overclockers Club
    ATI Radeon HD5770 Juniper GPU Video Card | ATI Radeon HD5770,Video Card,Juniper GPU,ATI Radeon HD5770 Juniper GPU Video Card Graphics Performance Frame Rate Benchmark Test | Benchmark Reviews Performance Tests
    bit-tech.net | Review - AMD ATI Radeon HD 5770 Review
    bit-tech.net | Review - HIS ATI Radeon HD 5850 Review
    AMD ATI Radeon HD 5770 - Angriff auf das Performance-Segment - Tests bei HardTecs4U
    ATI Radeon HD 5750 & HD 5770 – DirectX 11 pentru mainstream | lab501
    ATI Radeon 5770 / 5750 şi CrossFireX 2x 5770 - Introducere | Pag. 1 | WASD.ro
    Test: ATi Radeon HD 5770 (CrossFire) - 13.10.2009 - ComputerBase
    Last edited by adrianlee; Oct 14th, 09 at 06:21 PM.

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  4. #4
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    Ain't any better than 4870/4890/GTX260+.

    Don't tell me that they planned for 5790

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  6. #6
    In the lab... Monstru's Avatar
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    Two more...

    ATI Radeon HD5770 & HD5750 - DirectX 11 for the masses @ lab501(Google Translator required)


    ATI Radeon 5770 / 5750 şi CrossFireX 2x 5770 @ wasd (Google Translator required)

  7. #7
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    Quote Originally Posted by NerosDevil View Post
    Ain't any better than 4870/4890/GTX260+.

    Don't tell me that they planned for 5790
    These were designed to be midrange cards from the get-go to replace the Radeon 4700 series at the same general price points. Well AMD did succeed in boosting performance from the Radeon 4770 to the point of rivaling that of the Radeon 4870. With the Radeon 5800 series taking the high end performance crown at higher price points, offering Radeon 4870 level performance for less fits the market dynamics of video cards.

    Many are expecting a price drop of the Radeon 5850 when nVidia's Fermi based cards launch. The pricing gap for a hypothetical Radeon 5790 to fit will be closed when that happens.

  8. #8
    Abolisher of E|ektronics Lyfeforce's Avatar
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    These are mainstream cards, not budget cards as mistakenly thought by some. 5800 series cards are considered in the enthusiast class.

    The performance, I believe, is due to the limitation of memory bandwidth by the memory bus and lesser components in comparison with the 5800 series. However, I find it disturbing that the launch price is still tad bit high but I believe it's up to the distros to decide their own pricing.

    Also, mature drivers are likely to produce varying results. I wonder what's taking AMD so long.
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  11. #11
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    HD5770 has exactly half the processing power and memory bandwith of HD5870. Just like its bigger brother, this two model is severely memory bandwith limited. To the extent that 5770 with 800 SP's at 850MHz cant outperform 4870 with same amount of SP's but at slower 750MHz. Its apparent now.

  12. #12
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    Quote Originally Posted by Seramics View Post
    HD5770 has exactly half the processing power and memory bandwith of HD5870. Just like its bigger brother, this two model is severely memory bandwith limited. To the extent that 5770 with 800 SP's at 850MHz cant outperform 4870 with same amount of SP's but at slower 750MHz. Its apparent now.
    The Radeon 5770 has 2/3 the memory bandwidth of the Radeon 4870 but 13% more shader power. There are a couple of times where the Radeon 5770 bests the Radeon 4870 even at the more bandwidth hungry resolution of 2560 x 1600 (Far Cry 2 and NFS:Shift). There are plenty of times where the Radeon 4870 out runs the Radeon 5770 but often by a small amount (less than 10%). That is radically different that what the bandwidth figures would indicate.

    Now for the really, really weird thing I've observed in a couple of reviews: two Radeon 5770's can outrun a single Radeon 5870. As noted, the Radeon 5770 is literally half a Radeon 5870 in terms of computational resources: half as many shader, half as many TMU's, half as many ROPs and half the memory bandwidth. Two Radeon 5770's in CrossfireX should have the same computational resources as a Radeon 5870 but with the additional CrossfireX overhead. Two Radeon 5770's outrunning a Radeon 5870 is just odd from a purely logical perspective. I'm trying to figure out what could cause this anomaly (drivers?) and what it'd mean for single card performance on both the Radeon 5770 and 5870.

  13. #13
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    Quote Originally Posted by power666 View Post
    The Radeon 5770 has 2/3 the memory bandwidth of the Radeon 4870 but 13% more shader power. There are a couple of times where the Radeon 5770 bests the Radeon 4870 even at the more bandwidth hungry resolution of 2560 x 1600 (Far Cry 2 and NFS:Shift). There are plenty of times where the Radeon 4870 out runs the Radeon 5770 but often by a small amount (less than 10%). That is radically different that what the bandwidth figures would indicate.

    Now for the really, really weird thing I've observed in a couple of reviews: two Radeon 5770's can outrun a single Radeon 5870. As noted, the Radeon 5770 is literally half a Radeon 5870 in terms of computational resources: half as many shader, half as many TMU's, half as many ROPs and half the memory bandwidth. Two Radeon 5770's in CrossfireX should have the same computational resources as a Radeon 5870 but with the additional CrossfireX overhead. Two Radeon 5770's outrunning a Radeon 5870 is just odd from a purely logical perspective. I'm trying to figure out what could cause this anomaly (drivers?) and what it'd mean for single card performance on both the Radeon 5770 and 5870.
    In reply to ur 1st paragraph, u must understand the nature of memory bandwith limitations. Insufficient memory bandwith will hold back the full potential performance of a GPU, thereby if a graphic card is memory bandwith limited, it will perform a fraction of its maximum performance (to be determine by the number of SP's, TMU's, ROP's as well as clock speed). When a card already have sufficient memory bandwith, it doesnt matter if it have more, because more memory bandwith than is already required for optimum performance will not improve performance further. That is why 4870 does not outperform 5770 with the same margin as its higher memory bandwith in comparison to 5770's memory bandwith. But the thing is that 5770 has more processing power and thereby there is no way a 4870 should outperform it. But it did. This means that 5770 is memory bandwith starved and thereby inhibiting its full potential.

    As about your 5770's in xfire outperforming a 5870. Can you post the website link where u see this? Its definitely very interesting.

  14. #14
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    Quote Originally Posted by Lyfeforce View Post
    These are mainstream cards, not budget cards as mistakenly thought by some. 5800 series cards are considered in the enthusiast class.

    The performance, I believe, is due to the limitation of memory bandwidth by the memory bus and lesser components in comparison with the 5800 series. However, I find it disturbing that the launch price is still tad bit high but I believe it's up to the distros to decide their own pricing.

    Also, mature drivers are likely to produce varying results. I wonder what's taking AMD so long.
    Who mistake it? How can a HD 5700 series card be budget? HD 5700 means its generation HD5000 and family 700 series. Given that 800 family series is the high end part, how can the 2nd highest family series be budget? Then where shall mainstream/mid range family sit? Can you find a new family between 700 and 800? I dun get some ppl's utter ignorance. If 5700 is a budget card, then how about Geforce G210 and GT220? A beggar card?

  15. #15
    Registered User NextGen_Gamer's Avatar
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    Quote Originally Posted by power666 View Post
    Many are expecting a price drop of the Radeon 5850 when nVidia's Fermi based cards launch. The pricing gap for a hypothetical Radeon 5790 to fit will be closed when that happens.
    Yeah, I expect price drops on both the Radeon HD 5870 and 5850 once "Fermi" comes out. Radeon HD 5850 for $199, Radeon HD 5870 for $299 would perfectly compliment the $159 Radeon HD 5770 and $129/$109 Radeon HD 5750. Ideally, AMD would also launch a Radeon HD 5890 (with six Mini DisplayPort outputs, 2GB of memory, and increased clockspeeds) at $399, a Radeon HD 5850 X2 at $499, and finally the flagship Radeon HD 5870 X2 at $599.

    On a side note, I think we can finally dispel with the widespread belief that GDDR5 is much more expensive than GDDR3. AMD is using the same, ultra-high clockspeed GDDR5 chips in the entire Radeon HD 5000 series. Yes, that's right: the Radeon HD 5870/5850/5770/5750 all use the same 1250MHz GDDR5 chips, which means AMD obviously has no problem outfitting cards with them at near $100 price levels.

    Quote Originally Posted by power666 View Post
    Now for the really, really weird thing I've observed in a couple of reviews: two Radeon 5770's can outrun a single Radeon 5870. As noted, the Radeon 5770 is literally half a Radeon 5870 in terms of computational resources: half as many shader, half as many TMU's, half as many ROPs and half the memory bandwidth. Two Radeon 5770's in CrossfireX should have the same computational resources as a Radeon 5870 but with the additional CrossfireX overhead. Two Radeon 5770's outrunning a Radeon 5870 is just odd from a purely logical perspective. I'm trying to figure out what could cause this anomaly (drivers?) and what it'd mean for single card performance on both the Radeon 5770 and 5870.
    Yeah, I noticed that in AnandTech's results as well, and it makes no sense to me. As you said, two Radeon HD 5770 cards have exactly the same computational resources and memory bandwidth (if you double the Radeon HD 5770) as a single Radeon HD 5870. Even in a game that has perfect CrossFire scaling, two Radeon HD 5770 cards should at best be equal to the Radeon HD 5870, but they should never be beating it. I can only assume that the Radeon HD 5870's performance will continue to grow as drivers mature.
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