Last week, NVIDIA launched its new GeForce GTX 275 video card to compete against the ATI Radeon HD 4890. The launch was originally targeted for April 14, and our sources indicated that there were only around 5,000 units available on launch day.
However, one of our sources emailed us some links last night to e-tailers Newegg and Mwave to prove North American availability of the GeForce GTX 275.
Another email DailyTech received claimed that NVIDIA has "shipped 10s of thousands of chips to our board partners. Our board partners are in mass production and they have already started to make these available through retail and e-tail channels."
"Timing of course, depends on the region. But clearly, the floodgates are open," the source elaborated.
Based on the GT200 architecture, the GeForce GTX 275 features 240 processor cores operating at 1404 MHz, 80 texture processing units, a 448-bit memory interface, and an 896 MB frame buffer. NVIDIA is positioning it between the GeForce GTX 260 and the GeForce GTX 285 in price and performance. Benchmarks have shown that it exhibits slightly better performance over the Radeon 4890 in most gaming applications.
Pricing on the other hand, favors the Radeon 4890. Using mail-in rebates, the graphics division of AMD has already lowered the price to under $230. Further price cuts are probably coming, as the RV790 chip that the Radeon 4890 uses is much smaller and cheaper for AMD to manufacture. The G200b chip that the GTX 275 uses has 1.4 billion transistors, while the RV790 only has 959 million. Both are manufactured on a 55nm process.
ATI Radeon HD 4890
ATI Radeon HD 4870
GTX 260 Core 216
ATI Radeon HD 4850
Texture Address / Filtering
80 / 80
80 / 80
64 / 64
Memory Bus Width
quote: If you factor in the PCB design, CUDA support, Physix support, and engineering prowess
quote: You are right, my opinion is slightly biased toward superior engineering and superior technical merit. Your lack of understanding in those grounds only means you are throwing your own hard earned money away, well, to each his own.
quote: Just look at the last picture from this page: http://www.techreport.com/articles.x/16681/2 If you understand hardware, you would just see that you aren't getting much from ATI. Just because the benchmarks FPS is about the same between Radeon HD4970 and the GTX275, doesn't mean that they are the same "grade". If you factor in the PCB design, CUDA support, Physix support, and engineering prowess, the Radeon RV770 isn't even in the same league.
quote: engineering prowess
quote: If you don't work for AMD yourself, then you have no right to critisize my opinion on AMD's engineering prowess.
quote: copy and paste
quote: It is much much harder to design, simulate, and manufacture a functional 1.4 Billion transistor chip(GT200) than a 965 Million transistor chip(RV770).
quote: ATI cheats with DDR5 bandwidth on a technically weaker 256bit bus.
quote: Plus wouldn't it be nice to let ATI test the fabs and capacity first as a lab rat?
quote: DDR5 hasn't hit the necessary price and volume inflection point to be adopted as mass market memory type.
quote: AMD is so desperate that they are willing to sell the Radeon HD4870 below cost.
quote: C)A person who is sick of illogicality of the choices some people make ...
quote: The extra transistors on the Nvidia chip is used to support a much wider memory bus 512bit vs 256bit on the RV770, and custom CUDA and Physx support
quote: You are confusing volume economics with engineering prowess. Yes ATI has higher yield right now because it is a simpler design. It is much much harder to design, simulate, and manufacture a functional 1.4 Billion transistor chip(GT200) than a 965 Million transistor chip(RV770). Just because ATI went "cheap" doesn't mean it is a better engineering effort. In fact the opposite is true.
quote: You don't know me. I am a electrical and software engineer.
quote: NVIDIA has already acknowledged that AMD has a superior product this round
quote: Btw, CUDA and PhysX are for the time being "just for show" technologies that bring very little value to the average end-user.
quote: If you think I'm gonna pick for you when things are this tight, though, forget it. This one is too close to call.
quote: You rather ineptly fail to mention the biggest advantage of Nvidia's 275 over the 4790, the heat and power use. Even with the more powerful Nvidia GPUs, they have lower heat and power draw than the ATI. That's a big advantage.