Love_In_Rio
Veteran
What´s the tdp of actual ps3 slim model?.
PlayStation 4 (codename Orbis) technical hardware investigation (news and rumours)
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What´s the tdp of actual ps3 slim model?.
I wouldn't be surprised if PS4 is closer to 100w than 250w ...
AFAIR power supplies are usually most efficient at around 50-70 percent load.
For a 250W supply it would probably be optimal for ~125W+.
But it may simply be that Sony are quite happy with the PS3 power supply - there's nothing obvious in these consoles that needs a new power brick.
For a 250W supply it would probably be optimal for ~125W+.
But it may simply be that Sony are quite happy with the PS3 power supply - there's nothing obvious in these consoles that needs a new power brick.
The memory devices alone are probably consuming around 30W.
Betanumerical
Veteran
They could realistically change anything that doesn't interfere with what the FCC tested but in reality the specs for the PS4 and XBONE have been locked in for quite a while so its a bit of a moot point really.
What does that mean?
Dont at least clocks have to be locked down also? Interference? (hence top clock 2.75 ghz)
Betanumerical
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It means that the specs where decided a while ago and that realistically they aren't going to be changed majorly overnight. The top clock is for GDDR5 and thats probably the least likely thing to change imo.
http://news.cnet.com/8301-17938_105-10318727-1.html
Looks like under 100 watts.
Ps4 does weigh less than ps3 slim also.
I wouldn't be surprised if it's around 130W for the whole system.
I've often seen the rule of thumb is 50% as good design starting point for the power supply, it's high efficiency, and has a large margin for capacitor aging. It also reduces the amount of ripple which otherwise would reduce their lifespan even more. Sony seems to be following that rule roughly... Original PS3 had a 380W supply, consumed 200W. Slim was 216W rating for 100W, and the super-slim is 156W rating for 80W consumption.
Mark Cerny said in an interview that the PS4 is smaller than the PS3 at launch because it consumes less power. He also said that, while he haven't seen the box before E3, he knew what dimensions it would be because he knew the wattage. That seems to hint they didn't use any kind of extreme or expensive cooling solutions. It just consumes less. But there's an important difference in that there's only one SoC this time, and only one pool of memory, that reduces the space requirement a lot.
I've often seen the rule of thumb is 50% as good design starting point for the power supply, it's high efficiency, and has a large margin for capacitor aging. It also reduces the amount of ripple which otherwise would reduce their lifespan even more. Sony seems to be following that rule roughly... Original PS3 had a 380W supply, consumed 200W. Slim was 216W rating for 100W, and the super-slim is 156W rating for 80W consumption.
Mark Cerny said in an interview that the PS4 is smaller than the PS3 at launch because it consumes less power. He also said that, while he haven't seen the box before E3, he knew what dimensions it would be because he knew the wattage. That seems to hint they didn't use any kind of extreme or expensive cooling solutions. It just consumes less. But there's an important difference in that there's only one SoC this time, and only one pool of memory, that reduces the space requirement a lot.
I wouldn't be surprised at all if PS4 uses a heatpipe/fin-stack with a blower fan coupled to it, just like all PS3 versions - I believe - use/d. Phat's cooler was ridiculously overengineered and complicated; slim's was quite similar to modern PC tower coolers. Not sure what superslim has as I've not seen any teardowns of it, but I doubt it's a chunk of solid extruded aluminium...
I guess it will still be a nice blower design with backward curved blades (much better than the noisy blower we see on GPU cards), maybe a single vapor chamber would be enough since there's only one chip, no need for heat pipes? Or heat pipes still required if the heat sink is very wide?
Superslim teardown:
http://www.ifixit.com/Teardown/PlayStation+3+Super+Slim+Teardown/10670/1super
I think the superslim was designed to save every penny, I kind of hate it, and they really put the least amount of metal possible making it noisier than the slim. They could use a similar design in the PS4 case, but it would allow a huge area of fins extending towards the back, and looking at the backside of the PS4 it probably has a pretty wide heat sink too. The PS4 air intake seem to be the sides, and outlet being the whole back.
deathindustrial
Regular
Well if the FCC sticker is correct, the power supply is 252W (120V x 2.1A) which matches your 50% rule for sure.
http://www.engadget.com/gallery/sony-ps4-fcc-certification/6047412/
[edit]Didn't scroll back far enough . . . someone already posted the above, sorry.[/edit]
Cheers
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These are not related. PS3 also certed on time, but they were then still hit with Bluray diode supply issues.
Alucardx23
Regular
Hi guys, can anyone tell me about the meaning of the "max clock frequency of 2.75GHz", what is it referring to?
The clock on the RAM.
This reminds me of the forum post by a Chinese dev months ago.
He mentioned that the 5GB limit excludes system heap. If this is true, it may mean that for a game, Garlic memory may take as much as 5GB, while Onion memory takes the rest. So a game can use more than 5GB in total.
Don't forget to add salt.
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