wow I think the 5830 shows how high the defect rate (and how bad the yields) are with the TSMC 40nm process. They almost had to disable half of the chip to get the 5830 (30% of the shaders are disabled and 50% of the ROPs). The 55nm 4830 only needed to disable 20% of the shaders (640/800) and 20% of the ROPs (32/40). It just looks like the price/performance ratio of the 40nm parts is no where near what the 55nm process could deliver. I am just really glad I bought my 4890 when I did. Looking more and more like I will completely skip the 40nm generation. Lets hope the 28nm generation in 2011 is better. RV870/cypress die image. The ROPs are at the bottom. Compare to cartoon image shows how much die space the ROPs take up ps: I don't know why no one has ever brought this up, but ATI never released an official die shot of cypress, and the leaked one (above) actually has 2x16x16x5 shaders (2560sp, note the 16 rows on each side of 4x4 blocks) not the 2x10x16x5 as in the official block diagram. It is highly possible that even 5870 (1600sp) is a partially disabled cypress.