zero129 said:
1. The rumors say its based off the RV770 Only 2 GPU's ise the RV770 GPU thats the 4850 and the 4870. Sure the is also the RV770LE and that unit is based off the 4830, But since the rumors don't state the RV770LE and only state the RV770 we can assume its the 4850 or the 4870 GPU. 2. Nintendo would be able to get them cards very cheap, plus they wouldn't be off the shelf cards they would be custom made for the Wii U and more then likely made to use alot less power. Now lets say Nintendo goes with the RV770 LE GPU Radeon HD 4830 1GB vs Radeon HD 6670 (OEM) 1GB
IntroThe Radeon HD 4830 1GB has a core clock speed of 575 MHz and a GDDR4 memory frequency of 900 MHz. It also makes use of a 256-bit bus, and uses a 55 nm design. It features 640(128x5) SPUs, 32 TAUs, and 16 ROPs. Compare all that to the Radeon HD 6670 (OEM) 1GB, which has a clock speed of 800 MHz and a GDDR5 memory speed of 1000 MHz. It also features a 128-bit bus, and uses a 40 nm design. It is comprised of 480 SPUs, 24 TAUs, and 8 ROPs. (No game benchmarks for this combination yet.)
Power Usage and Theoretical BenchmarksPower Consumption (Max TDP)
Memory BandwidthIn theory, the Radeon HD 6670 (OEM) 1GB should be 11% faster than the Radeon HD 4830 1GB in general, due to its higher data rate. (explain)
Texel RateThe Radeon HD 6670 (OEM) 1GB is a small bit (approximately 4%) faster with regards to AF than the Radeon HD 4830 1GB. (explain)
Pixel RateThe Radeon HD 4830 1GB is much (approximately 44%) more effective at FSAA than the Radeon HD 6670 (OEM) 1GB, and should be able to handle higher resolutions while still performing well. (explain)
Not much difference in the first 2 but a huge advantage of 44% in the Pixal Rate. Now lets Compare the 4850 to the 6670 Radeon HD 4850 1GB vs Radeon HD 6670 (OEM) 1GB
IntroThe Radeon HD 4850 1GB features a core clock speed of 625 MHz and a GDDR4 memory frequency of 993 MHz. It also makes use of a 256-bit bus, and uses a 55 nm design. It is comprised of 800(160x5) SPUs, 40 Texture Address Units, and 16 Raster Operation Units. Compare all that to the Radeon HD 6670 (OEM) 1GB, which makes use of a 40 nm design. ATi has set the core frequency at 800 MHz. The GDDR5 RAM is set to run at a frequency of 1000 MHz on this specific card. It features 480 SPUs as well as 24 Texture Address Units and 8 Rasterization Operator Units. (No game benchmarks for this combination yet.)
Power Usage and Theoretical BenchmarksPower Consumption (Max TDP)
Memory BandwidthThe Radeon HD 6670 (OEM) 1GB should in theory be a little bit faster than the Radeon HD 4850 1GB in general. (explain)
Texel RateThe Radeon HD 4850 1GB will be a lot (approximately 30%) better at AF than the Radeon HD 6670 (OEM) 1GB. (explain)
Pixel RateThe Radeon HD 4850 1GB will be a lot (more or less 56%) faster with regards to AA than the Radeon HD 6670 (OEM) 1GB, and also able to handle higher screen resolutions while still performing well. (explain)
As you can see the 4850 beats the 6670 no problem So no matter what way you cut it, if the Rumors are true about the PS4 specs the is no way its going to blow the Wii U away. even if the Wii U uses the Low End GPU in the RV770 Family it is still going to be very close. But thats only if all the rumors are true. |
Watts still seem too high though. 4830 seems more likely since that could be modified to run at ~50 watts which I bet is the highest Nintendo would go.
Keep in mind that any GPU Nintendo chooses would most likely be downgraded to run cooler and use less power. Sony would likely upgrade a GPU. So an updated 7670 would easily be match or beat a downgraded 4830.
