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AMD Responds to TechPowerUp Investigation, Issues Remedy

ulrik

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Question: Is there already a discussion going on about possible energy savings by switching off a shader block? Since in techpowerup and computerbase.de test the unpatched amd radeon 4830 (having 560 shader count) seems to require less power than the powercolor 4830 having 640 shaders.

Could somebody try this out, please? Maybe this could be a new strategy for 4850/70 energy savings/Powerplay? Another interesting way would be to try rivatuner shader block bit masking.What's the real difference in the old and new amd bios?
 
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ulrik just gave me an idea. Would there be any way to "throttle" the amount of SP's enabled for extra power-saving during 2D mode?
 

eidairaman1

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how about you suggest that to wizzard for the next build of ATITool, if he will ever get around to deving that program anymore.
 
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meh, I wouldn't suggest since I would never use it (not my house, i don't pay the electricity bill :laugh:)
 
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its teh idle clock of teh amd bios that cuases teh power savings, ask whizzinator
 

Kreij

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It's quite possible that AMD runs some additional tests to ensure that the review samples are working correctly (as opposed to doing partial batch testing for retail products).

It may be that they were using a variety of BIOS's to ensure that the shaders on the review cards were working correctly and accidentally sent the cards out in the final test configuration (minus one shader).

I really doubt it was any kind of deceipt on AMD's part as it simply does not make any logical sense for them to do that. Their quick response also points to a mistake, not a purposeful act.
 
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teh news post is a quote from AMD's press release
 
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Awww man... You guys are defending AMD on this one, it makes me sick. If nVidia did this, you would be bashing the hell out of em. The point is they tried to get away with one and had a BIOS ready in case they got caught, that is why the "fix" came so quickly.:shadedshu
 
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Awww man... You guys are defending AMD on this one, it makes me sick. If nVidia did this, you would be bashing the hell out of em. The point is they tried to get away with one and had a BIOS ready in case they got caught, that is why the "fix" came so quickly.:shadedshu

it has been said and said again, the cards have the SP's on them already, it costs AMD/partners the same to produce the card with all of them working or not. so what possible benefit could it bring to BIOS disable some of them?
 
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Kreij

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Awww man... You guys are defending AMD on this one, it makes me sick. If nVidia did this, you would be bashing the hell out of em. The point is they tried to get away with one and had a BIOS ready in case they got caught, that is why the "fix" came so quickly.:shadedshu

Of course they had the correct BIOS availalbe. That is what the cards were supposed to be using. To mistakenly send out samples with the wrong (perhaps test) BIOS is an understandable mistake.

I've never bashed nVidia and have owned nVidia cards in the past and was pleased with them. It's true that at the moment I prefer ATI cards, but that is due to what I feel are more stable drivers and I also prefer their "once a month" driver releases (it's much less confusing than nVidia's method).

If nVidia release review samples with a similar issue, I would give them the benefit of the doubt until it was proved otherwise. I, personally, believe in "innocent until proven guilty".

Just my 2 cents.
 
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kreij you are with ATI because you feel more stable drivers and i am with Nvidia because IMO i feel the drivers are more stable. I have seen so many threads about driver issues with ATI (as with Nvidia) that is what turned me away from ATI for now
 

Kreij

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kreij you are with ATI because you feel more stable drivers and i am with Nvidia because IMO i feel the drivers are more stable. I have seen so many threads about driver issues with ATI (as with Nvidia) that is what turned me away from ATI for now

LOL ... that just goes to show you that we each perceive things differently.
I am thankful that there is an nVidia (and ATI) so that we as consumers have a choice, and the competition is good for us all.

We have seen what happens when there is no competition and a company justs sits back and does nothing new (no, I'm not naming any names ;) )
 

roofsniper

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Awww man... You guys are defending AMD on this one, it makes me sick. If nVidia did this, you would be bashing the hell out of em. The point is they tried to get away with one and had a BIOS ready in case they got caught, that is why the "fix" came so quickly.:shadedshu

what? that doesn't even make any sense? why would amd release a card and pay money to have the sps on there but not use them? thats completely idiotic. thats like amd releasing a cpu that is supposed to clock at 3.0ghz but they clock it at 2.0ghz. because then people will get it and see that it sucks and go to intel. same with ati people might get it then return it and buy the nvidia offering. it would confuse me greatly as to why amd did this on purpose. especialy when they send the same exact versions to reviewers who should the performance of the card. and ontop of that what are the chances of every single person that reviews and buys the card to think that it has the correct number of sps? gpuz shows the sps right there and everyone knows what they are getting. i don't understand why anyone could possibly think that amd did this on purpose. to me it just seems like people wanting to start something to bash amd. :mad:
 
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Nvidia has been called out on things, often. Such as the Crysis driver tweaks, and the 16bit vs 24bit. None of their cards untill the late 8800 series had the true precision ATI did.



ATI made a mistake, not overpromising hardware and underdelivering, but with a faulty BIOS, perhaps the man in charge of it placed a wrong character in the BIOS. What this does tell us is that a BIOS hack could be possible.
 

roofsniper

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Nvidia has been called out on things, often. Such as the Crysis driver tweaks, and the 16bit vs 24bit. None of their cards untill the late 8800 series had the true precision ATI did.



ATI made a mistake, not overpromising hardware and underdelivering, but with a faulty BIOS, perhaps the man in charge of it placed a wrong character in the BIOS. What this does tell us is that a BIOS hack could be possible.

yea but nvidia was rigging things and this is a mistake that hurts the company. which just makes me so clueless as to how people can actualy think that amd is trying to pull a fast one when in no way at all it helps them.
 
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read
comprehend
post
 

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Just to add, AMD loses nothing by selling HD 4830 with its proper 640 SPs, just as they're not going to be upping profits/cutting mfg costs by cutting the SP count. This was an accident, it happened to be spotted on early, and AMD released a fix within 36 hours. Please don't make this a "if it were NVIDIA" discussion, don't play fortune-teller. Back to topic.
 
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competition is good for market but cheating not included,thats illegal,i n this care indicated to "that",so let see who is right,who is wrong,lets wait n see
 

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Some guy on newegg posted a review saying he unlocked the 800 shaders. I noticed it when I was purchasing the card last night. He doesn't say how he did it though of course, just says google to find out. I did that, but I didn't find anything. Anyone else better at googling things want to give it a shot?
 

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He's lying. You can't bring 800 SPs for a HD 4830 by means of any softmod/bios. A HD 4830 is a RV770 with two ALU clusters (160 SPs) disabled by a physical method, not masked. After physically disabling the ALU clusters, they accordingly give out the BIOS. Some of the cards AMD sent out had 2 clusters disabled physically, but tables for three clusters were missing from the BIOS...hence the 560 SP HD 4830 anomaly. A simple BIOS fix solved, and enabled the extra ALU cluster that got disabled accidentally.
 
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