Sunday, February 22nd 2009
RV790 Built on Improved 55 nm Manufacturing Process
It is clear now, that AMD's next performance GPU, the RV790 will be built on the 55 nm manufacturing process. To build on this information, sources tell German website Hardware-Infos that one of the factors that will help the new GPU perform better and run at higher clock-speeds than its predecessor, the RV770 does, is the newer improved 55 nm manufacturing process it will be built on. Going by the foundry-partner codename "55GT", the RV790 may get a little help from its superior silicon fabrication, which invariably makes it more expensive to manufacture.
One of the reasons behind why AMD is starting its 40 nm GPU lineup with a mainstream GPU such as RV740, is that the 40 nm process needs further development by foundry companies. It hasn't developed to the level that safely permits manufacturing high-end GPUs with stellar transistor-counts. For the same reason, NVIDIA's 40 nm conquest will be flagged off by the entry-level GT218 GPU. High-density circuits built on the current 40 nm process are known to be very prone to electrical leakage.
RV790 engineering-samples undergoing testing are known to be coming in two flavours according to the source: a base model and an overclocked model. The base model comes with the same exact clock speeds as the RV770XT: 750/900 MHz (core/memory), while the overclocked model is known to come with clock speeds of 850/975 MHz (core/memory). To achieve that 100 MHz increment in core frequency, the voltage is known to be stepped-up from 1.24 to 1.30 V. Products based on this GPU are known to surface by April.
Source:
Hardware-Infos
One of the reasons behind why AMD is starting its 40 nm GPU lineup with a mainstream GPU such as RV740, is that the 40 nm process needs further development by foundry companies. It hasn't developed to the level that safely permits manufacturing high-end GPUs with stellar transistor-counts. For the same reason, NVIDIA's 40 nm conquest will be flagged off by the entry-level GT218 GPU. High-density circuits built on the current 40 nm process are known to be very prone to electrical leakage.
RV790 engineering-samples undergoing testing are known to be coming in two flavours according to the source: a base model and an overclocked model. The base model comes with the same exact clock speeds as the RV770XT: 750/900 MHz (core/memory), while the overclocked model is known to come with clock speeds of 850/975 MHz (core/memory). To achieve that 100 MHz increment in core frequency, the voltage is known to be stepped-up from 1.24 to 1.30 V. Products based on this GPU are known to surface by April.
19 Comments on RV790 Built on Improved 55 nm Manufacturing Process
Also, I think you meant: "To build on this information"
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.
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.
lets hope these improvements bring something new to the table.
It's not annoying at all to me, though. The more closed off your case is, the less audible as well.
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 :mad:
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.
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.