RV790 Built on Improved 55 nm Manufacturing Process

Isnt the RV770 55nm though, I'm as to what has actually been improved.

 

Ahh, makes more sense now.

Also, I think you meant: "To build on this information"

 

They can't always move in leaps & bounds. I would rather for them to continue to tweak this series instead of releasing another gas guzzling egg in the next.

 

Why isn't the RAM clocked higher?

My bog standard HIS HD 4870 512MB does 790/1100 (4400DDR) straight from the Catalyst driver - just max out the sliders. It passes all the torture tests, too. I've seen posts from others that have achieved the same from their bog standard cards, too.

So, while the GPU clock here is higher than what I've achieved with no effort at all, I don't see why the RAM isn't clocked at 1100MHz by default.

 

I wonder if that stops cards from squealing

 

My only beef is all the darn clicking it does when switching between 2D & 3D clocks. It was the same for the 3800s. I could even hear it over my TV & the tons of fans that's in my case.

 

I see where they are going...

They just created the 40nm silicon just to take on Nvidia's 40nm series early. Oh well, at least 55nm is still good enough. Maybe they will revise to 40nm sometime in the future. As for the clicking, I don't care. I think it is a way of diagnosting issues so I am confident when it clicks.

 

I guessed this would be a tweaked core for higher clock speeds. I would prefer a die shrink but the results are almost the same.

 

no they mean electrical leakage inside the gpu. The squealing comes from your capacitors (ever hear the flash capacitor squeal as it charges up a flash on a cheap disposable camera?). The cards will still squeal unless they use different types of caps.

 

its an overclocked 4870... which uses more voltage to run faster, that could probably be done now.

lets hope these improvements bring something new to the table.

 

You sure if it's the card? I had an hd3870x2, hd3870, and hd3850 card and it doesn't do any clicking. Only clicking you should hear is your hard drive.

 

never heard any "clicking" with my HD3870s or HD4870s . . . but I have heard the squeling before when the cards are powering up for 3D mode.

It's not annoying at all to me, though. The more closed off your case is, the less audible as well.

 

I must be hearing it when the squeling either starts or stops, but whatever noise it is its definitely coming from the X2. Its not really annoying but I just relate that sound to something that's about to break down. Its not really a click either, more like a bump...& it always happpens twice with a 2-3 second interval. I must not be hearing what's in between the bumps.

 

the same reason the new Phenom IIs off the line are clocking higher, using better methods for lithography, thus cleaner traces, and more insulative material between the transistors. All this equates to less leakage, and more electrical handling with less migration problems, and thus higher clock speeds.

 

so there is no upgrades , just overclock using voltage mode

 

phenom 2 at least uses smaller 45nm node and give us some power reduction, unlike those power hungry monster

and as far as insulation goes they could put it into rv770, but then again they wouldn't have shiny new refurbished product 9 month after

imho it would be much better they use that leaky rv740 x2 on same pcb to create new mainstream monster ... hey but noooo rv740 dont even have crossfire link except those software pci-e x16 cfx bridge. it a shabby tryout to squeeze as much as money they could on their new singing debutante. and what's the worst people buy it.

 

The thing is even though it doesn't look different if you looked at the blueprints or compared them with microscopes there would be differences in the cores.

For example imagine a windy road around hills and over bumps with speed limits etc and what they've done is they've flattened it all out and made it a straight flat road allowing everything to go faster.