5670 - any insider info?

[coffeecoffee]

It's time for my 8600GTS to retire into a HTPC and I limited down my choice to two cards; 4670 and 4770 - until I realized 5670 is due Q1 of 2010.
While one source suggests the 5670 to be a sub-$100 card for those with a limited budget - What I want to know is if a 5670 will outperform a 4770 [no OC]; more importantly, does anyone know if any versions of the 5670 will have a cooling system that will vent the heat out of your case? Similiar to the 4670 IceQ or a 4770 xfx radeon? See links below if your not sure what cooling system I'm referring to. While the 5670 will mostly likely not require a power plug [only a PCI-E 1.0 or better to power]; you would think heat would not be a issue. However, I have a ill-vented case and am on a extremely tight budget due to college. Any info will be appreciated.

http://www.newegg.ca/Product/Product.aspx?Item=N82E16814150369&Tpk=4770

http://www.hisdigital.com/un/product2-66.shtml

PS: Is it safe to assume the 5670 will be based on the 40nm process?

 

[megamanx00]

You'll find out when the rest of us do.

Rumor is that it will have 400 shaders (basically have the shaders and ROPS as the 5770) and be based on a 40nm process. Since it has to be slower than the 5750 (which is marginally faster than the 4850) I say it will be between the 4770 and the 4670 in terms of DX10 performance. As for DX11, who knows if that will be fast enough to actually play games in DX11. We'll find out soon enough.

 

[coffeecoffee]

I guess we will. Since it's obvious that the 5670 will outperform the 4670 overall, my guess it will perform somewhere between a 4670 and a 4770. I just hope there's a 1GB GDDR 3 or 5 version with a exhaust vent cooling on it. *crossing my fingers atm*

 

[TheGreatGrapeApe]

HD5670 should be slower than the HD4770 in most situations due to having half the shaders, it'll be 40nm, no power connector on early models sofar. As for HSF assemblies, AIBs will likely put different coolers on them, I wouldn't be surprised to see some with the HIS Ice Q / Turbo type cooler on one or two, but I would also expect those to cost much more as well (likely into HD5750 territory) .

Main thing depends on what you're going to do with it, for gaming the performance difference is likely going to be somewhere midway between the HD4670 and 4770, so you'll have to consider that in your wait and what features you need/prefer.

 

[TheGreatGrapeApe]

They aren't scraping 32nm it's essential to making 28nm parts.

Actually I never believed the 32nm rumour for these chips, since based on AMD's previous statements they were going to push for going straight to optical shrink when/if possible, which was already demoed by TSMC. So the 28nm optical shrink made much more sense, just like they went straight to 40nm not 45nm.

 

[TheGreatGrapeApe]

Understand what I wrote, you need 32nm to make 28nm, so it's not scrapped completely, they've simply decided to go straight to the optical shrink of 32nm which is 28nm. Scrapping the 32nm process all together means moving to 22nm right away and that's not going to happen.

It's the optical physics involved, the splits are all pre-ordained by physics and mapped out years in advance;

90->80nm
65->55
45->40
32->28
22->18
16->14
11->10 or 8.9
8->

After that nano-tech and then the internet becomes a series... a.. a.. a... a series of carbon toobs !

I forget what the last optical shrinks are (hey just woke up, need coffee while watching Meet the Press).

But here's a good old reference I have that should explain the actual splits, and why 28nm is just one (the most logical and easy) of many possible optical shrinks, ... if you're willing to read it (it's kinda dry).
Litho Paper

And then a little less detailed, but easier for most people to get an overview of the paths[url
Roadmap

Edited to fix links which wouldn't work due to spaces.