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  1. #1
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    PS4 Devkit info: 2.75GHz Max clock?



    Sony proudly showed off its PlayStation 4 hardware for the first time at E3, and now we're getting a peek at what developers are working with this generation thanks to the FCC. The DUH-D1000AA prototype Development Kit for PS4 is listed in these documents, tested for its Bluetooth and 802.11 b/g/n WiFi radios. As one would expect, the diagrams show it eschews the sleek design of the consumer model for extra cooling, a shape made for rack mounts plus extra indicator lights and ports. Also of note is a "max clock frequency" listing of 2.75GHz, and although we don't know how fast the game system will run by default, it's interesting to hear what all that silicon may be capable of (as a commenter points out below, that may relate to the system's 8GB of GDDR5 RAM) while maintaining a temperature between 5 and 35 degrees celsius. Hit the link below to check out the documents for yourself, after seeing this and the system's controller become a part of the FCC's database all we're left waiting for is Mark Cerny's baby.
    http://www.engadget.com/2013/07/16/s...pment-kit-fcc/

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    i would be over the moon if that was the clock for the CPU. 2.8 GHz would be awesome on the eight cores! eight cores is a bit of a nicety, but the 1.6 GHz is a bit low imo. i haven't seen a CPU clocked that low for almost a decade...

    but yeah, at those temps it sounds more like the memory.
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    The 2.0GHz rumor seems true after all!




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    Keep in mind that they'll require a higher clock to cater for all of the debugging tools that is run at the same time.

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    Thats the clock rate for the GDDR5. 2750mhz, giving it 5500mhz.

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    I don't think that's the clock rate for the GPU as it would seem too low, perhaps it's the APU core frequency?

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    What I don't like is there is no 5ghz band on the "n" wireless. Hopefully that is just for the devkit.

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    I hardly doubt the retail version will be clocked that high, unless of course they tested it plenty enough and 2.75 GHz doesn't affect performance and temperature. But this makes me optimistic that we may at least get 2.0 GHz.


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    devs kits are allways more powerfull then retail units

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    RAM is the fastest component.

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    This was posted in the other thread abotu heat and to be honest someone already said it has nothign to do with ahte actual performances of the PS4.

    The heat info is the ambient room temperature and as mention the 2.75 is most likelythe RAM speed.

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    Actually, it's the Radio frequency. It was pointed out by some members in Neogaf and other places too.

    Moving on...




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    Doh!



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    This is great news if true. I was a bit worried the CPU was a bit underpowered at 1.6~2.0GHz. 2.5GHz is the sweet spot in my opinion, but Sony should still be mindful given the console's size.

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    Quote Originally Posted by keefy View Post
    This was posted in the other thread abotu heat and to be honest someone already said it has nothign to do with ahte actual performances of the PS4.

    The heat info is the ambient room temperature and as mention the 2.75 is most likelythe RAM speed.
    I posted in the heat thread after I made this one.
    Still interested in the over all temps and CPU clock rates

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    Quote Originally Posted by brebaz View Post
    Actually, it's the Radio frequency. It was pointed out by some members in Neogaf and other places too.

    Moving on...
    Radio is in MHz.

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  21. #19
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    Quote Originally Posted by mynd View Post
    Radio is in MHz.
    Well, i was just passing on what i read elsewhere!! I didn't pay attention at all (lack of sleep) But, then again you wrote MHz in your previous post




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    The radio frequencies are under WLAN, for b/g and n, 2412 to 2452 MHz. It clearly states the maximum frequency coming out of the box is 2.75GHz, which probably is the GDDR5 clock. But this doesn't say anything about the APU clock. Also note, this was submitted in June. It seems very likely the rumors that Sony was going to be clocking the APU close to 2GHz is still very possible. Sony has sounded very confident with their fab of the PS4 APU. Remember, the APU are *similar* between the PS4 and XBone but not *identical*. All indications are MS froze their APU design last winter, while Sony didn't finalize the PS4 APU until recently, possibly May. This means the XBone caught the tail end of the previous GPU generation which ended last year and Sony caught the leading edge of the next generation of GPU. Every indicator is pointing to the PS4 APU being considerably more powerful than the XBone APU.
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    Quote Originally Posted by brebaz View Post
    Well, i was just passing on what i read elsewhere!! I didn't pay attention at all (lack of sleep) But, then again you wrote MHz in your previous post
    LOL, I'll use the same defence, it was very late last night when I wrote it.

    But there is no doubt that its the clock speed of the GDDR.5.

    Quote Originally Posted by Bligmerk View Post
    The radio frequencies are under WLAN, for b/g and n, 2412 to 2452 MHz. It clearly states the maximum frequency coming out of the box is 2.75GHz, which probably is the GDDR5 clock. But this doesn't say anything about the APU clock. Also note, this was submitted in June. It seems very likely the rumors that Sony was going to be clocking the APU close to 2GHz is still very possible. Sony has sounded very confident with their fab of the PS4 APU. Remember, the APU are *similar* between the PS4 and XBone but not *identical*. All indications are MS froze their APU design last winter, while Sony didn't finalize the PS4 APU until recently, possibly May. This means the XBone caught the tail end of the previous GPU generation which ended last year and Sony caught the leading edge of the next generation of GPU. Every indicator is pointing to the PS4 APU being considerably more powerful than the XBone APU.
    Would be interested in what makes you think they have done this.
    If anything I would have put money on Sony being way more advanced in the process, given developers have the dev kits for some time, and thier O/s is more mature.
    If anything MS is the one giving off the whole "we just got the chips back from the fab", vibe.

    That's not to say the design wasn't set in stone last year, as you suggest.
    I just don't think Sony are as "last minute" as you are saying, they give off a way more confident, well planned vibe to me.
    Last edited by mynd; 07-17-2013 at 01:09.

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    Sucks that this is for the RAM. GDDR5 has four clocks anyways, right?

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    The power of the PS4 will be untold for many years.


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    Quote Originally Posted by mynd View Post
    I just don't think Sony are as "last minute" as you are saying, they give off a way more confident, well planned vibe to me.
    JIT, just in time, not last minute. There were the rumored Durango tapeout problems late last year, but the next tapeout was good. The pre-production prototype that Wired was allowed to tear down was a step further than a devkit and that was in May, indicating APU's being manufactured from then with a GPU generation that was ending in the winter of last year, to have enough evaluation APU's for pre-production units.

    Sony didn't finalize until Mar. because it was a surprise to Cerny that the PS4 would have GDDR5. That gives indications around March when they finalized the GPU, which puts it into the beginnings of this generation. Old Sony would have waited until Maxwell comes out in 2014 but that was old Sony. They did strategically wait though, I think that is what you are interpreting as last minute. It is last minute like a sniper sitting in position for 6 days without moving a muscle, tracking his target, that at the last minute of the last second of the last millisecond of the last microsecond, pulls the trigger and executes the objective.
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