The NEXT LAST R600 Rumours & Speculation Thread

Real HD 2900XT temperatures?

http://we.pcinlife.com/viewthread.php?tid=759069&page=2&fromuid=167461#pid14366626

 

Perhaps think of it as a fibre ring.... Just instead of going around a small town, it goes around the chip.

 

According to this page (a few days old) AMD will skip the 80nm, quite confusing when everyone write different things .

http://www.digitimes.com/mobos/a20070423PD213.html

 

http://www.xtremesystems.org/forums/showthread.php?t=142955

I'll keep an eye on this thread over at xs.

The "OC masters" have their cards now, and hopefully one of them will get drunk and talk to much.

Edit: Wee! My 600th post. I'm such a spammer.

 

Depends on your POV. For noise-conscious people like me, energy efficiency is a big deal. And it looks like NVidia wins big time in that department.

 

What's there to complain about, the only news from people that actually have the card and are under NDA state that it's pretty much as quiet as a 8800 GTX idle and under load.

Myself, I'm planning on running one in my shuttle case with a 450 watt PSU.

I seriously wouldn't be surprised if this could run on a modest system with a core 2 duo, 1 HD, and a high quality 350 watt PSU, assuming they even sell PSU's that low with 2x6 pin connectors.

Unless of course the Vista 64 drivers suck in which case it might still be a toss up between this and a 8800 GTX. Still a 399 USD price point is mighty attractive.

Regards,
SB

 

Still, if the card can really draw 200 W or more, there will be a very significant number of potential buyers with PSUs on the weak side. The question is not if AMD will lose sales, it's how many.

 

It's also part of the reason the card is so cheap. You can buy new psu AND HD2900XT, for the cost of the competitor's product. I understand that part of the reason 8800U is so expensive is the high-grade ram, and the AMT of it, but it then also strikes me as good reason for there to NOT be an XTX card w/ 1gb of ram, or AMD would not be able to release the card for so cheap. The GDDR used on these AMD cards is not so expensive as the memory on nV's cards, but 1GB of GDDR4 is a whole different story!

 

It's not just about the cooler. How much heat it dumps in the case and how much heat is generated in the PSU due to load are both very important considerations for a quiet system.

Total wattage is only a small piece of the picture. 12V rails are the first spec to look at these days. But I agree, 350 W should be fine. You'll just need a 500W PSU anyway for the connectors. (edit)More importantly, it's hard to find a 350 W PSU with sufficient 12V capacity.

 

True, but according to Gibbo (taken with a large dosage of salt) AMD told him the R600 draws about 200 watts in normal operation and about 225ish when overclocked. Again taken with a large grain of salt. He could just be saying that to drum up demand for R600 in preparation of being able to sell them.

So, is another 20-30 watts over and above an 8800 GTX going to suddenly cause a powersupply to heat up much more with a R600 vs. a G80?

And as far as I can tell, most of the heat is vented out the back of the case. Although the memory chips on the back of the card would dump some into the case.

And anyone looking for a truly silent HTPC isn't really going to be using an HD 2900 XT or a 8800 GTX anyways. Myself I'm looking at either a passively cooled 8500 from Nvidia or a passively cooled RV610 from ATI for my HTPC. Depending on which one handles HD video decoding better (H.264 AND VC-1).

Regards,
SB

 

I just wonder if/when R600 comes and it really needs these rumoured 225W ...
will all the people who wrote again and again that "theinq" and "Fudo" were writing FUD about how power hungry the card is ("220W? no way!"), will these people write that they were wrong?

Sheeesh, now the fact that XT with 512MB can need 225W is almost officially confirmed... I don't wanna touch the XTX ground and imagine how much it may need.

No doubt R600 is a beast in a kind. Hopefully in no way it will be associated with P4 the "Presshot"

 

I was thinking compared to the GTS. But then again, we don't know much about performance yet. It could be a worthwhile tradeoff for most.

I'm not looking for a dedicated HTPC at all, I use my gaming system for movies. Since ATI uses a smaller process, I was hoping they would improve on NVidia's already decent energy efficiency. It looks like I'll be waiting quite a while for a card to play Crysis. But that's OK, no hurry.

 

True, I probably should have compared it to a GTS 640 since it appears to be closest to that in DX9 games. Although with all the FUD flying around the web at the moment, I'm not pinning it down at anything until proper reviews come out.

I'm wondering if it'll be possible to truly compare apples to apples anymore as it appears Nvidia and ATI now have different AA seetings. I'm sure the standard 4xMSAA will still be around, but that's rather boring when you have these other hybrid AA settings.

Regards,
SB

 

Without any real proof or anything, the max capacity of XT's default cooler is 210W (aka what it can still cool), so it means that even with overdrive OC, it won't go over that.

 

Not all the power supplied to the card goes to heat, some of it has to used to some work

 

Which fits in quite well with the 200 watts under full load at default clocks that Gibbo is saying.

I'd imagine hardcore o/c'rs will will probably replace the default cooler anyways.

I'll still hold judgement until some actual reviews show up. At this point it's anyone's guess what is BS and what is correct out there.

Regards,
SB

PS - I bet noone can guess I'm sitting at home bored.

 

Which work?

The only "work" is the fan rotation which isn't much compared to the total power a GPU eats up.

A GPU isn't a mechanical part and the efficiency formula you refer to applies only to this. The power has to be distributed between the GPU itself, the memory, the VRMs and the remaining components of the board, just like an R580 itself never eats more than something like 60watt according to ATITool/RivaTuner, although this doesn't include memory controllers' supply voltage.

 

wow, I can't believe people skipped right over what Vertex shader posted.

Wizzard @ techpowerup.com has a 1ghz R600 card. The qustion is, is it a OC, or stock? Because if that is a OC, then that is one danm fine OC. 250w is most impressive.





http://www.techpowerup.com/?30555