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[Eurogamer] Wii U has 1.24GHz CPU, 550MHz GPU

post #1 of 83
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Quote:
Originally Posted by Eurogamer 
Barely held back by non-disclosure agreements, game developers have expressed some disappointment with the Wii U CPU architecture but have yet to go on the record with firm information on exactly why performance is apparently so lacklustre...Today, a post from Wii and PS3 hacker Marcan puts a firm figure on that, precise to six decimal places no less:

"1.243125GHz, exactly. 3 PowerPC 750 type cores (similar to Wii's Broadway, but more cache). GPU core at 549.999755MHz."

Marcan's comments corroborate earlier stories about the provenance of the CPU, which suggested that the cores are indeed very similar to the Broadway architecture found in the Wii, which in itself harks back to IBM's PowerPC 750 core which first debuted way back in 1997...For the transition to Wii U, clock speed has almost doubled, core count has tripled and according to Marcan, there is more on-board cache. Other sources have previously suggested further enhancements to the technology, such as out of order execution - a feature that isn't present in the Xbox 360 or PlayStation 3 CPUs.

However, Marcan reckons that the Wii U CPU shouldn't be dismissed based on clocks alone - even with the speed deficit and with only one hardware thread per core, he suggests that it's like comparing Intel's power-hungry, inefficient Pentium 4 design with the later, better-designed Core series processors.

"The Espresso is an out of order design with a much shorter pipeline. It should win big on IPC on most code, but it has weak SIMD", he reckons.

"So yes, the Wii U CPU is nothing to write home about, but don't compare it clock per clock with a 360 and claim it's much worse. It isn't," he concludes

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post #2 of 83
Quote:
1.243125GHz, exactly. 3 PowerPC 750 type cores (similar to Wii's Broadway, but more cache). GPU core at 549.999755 MHz
Yes. This tells us a lot about the performance. Appreciate the 6 decimal places.
Edited by B!0HaZard - 11/29/12 at 2:21pm
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post #3 of 83
I will eat you for posting this before me.

Very Interesting hardware however.
It's claimed to have a slower clock speed or be slower by Namco.
But It isn't all about clock speed as you already know, and If that GPU is tough enough we may even see some light load which should be on the CPU placed on It.
I hope It's around 1.5x more powerful than the 360 that way It should hold up well on the hardware side, Innovation will always grow with Nintendo games imo. Still need to buy some new Wii games for Dolphin.
Edited by TopicClocker - 11/29/12 at 2:23pm
post #4 of 83
I like his attention to detail, that's for sure smile.gif
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post #5 of 83
I gotta say, the Wii U didn't disappoint as far as specs go. tongue.gif
     
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post #6 of 83
Quote:
Originally Posted by TopicClocker View Post

I will eat you for posting this before me.
Very Interesting hardware however.
It's claimed to have a slower clock speed or be slower by Namco.
But It isn't all about clock speed as you already know, and If that GPU is tough enough we may even see some light load which should be on the CPU placed on It.
I hope It's around 1.5x more powerful than the 360 that way It should hold up well on the hardware side, Innovation will always grow with Nintendo games imo. Still need to buy some new Wii games for Dolphin.

Naaa its not faster then 360. If it was they would have said so with confidence. It probably as fast if not slower by some. 360 CPU is 3.2Ghz. Yes its probably much lower IPC but its its 3.2Ghz vs 1.25Ghz.
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post #7 of 83
Quote:
Originally Posted by Imglidinhere View Post

I gotta say, the Wii U didn't disappoint as far as specs go. tongue.gif

can't tell if serious?
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post #8 of 83
Quote:
Originally Posted by ZealotKi11er View Post

Naaa its not faster then 360. If it was they would have said so with confidence. It probably as fast if not slower by some. 360 CPU is 3.2Ghz. Yes its probably much lower IPC but its its 3.2Ghz vs 1.25Ghz.

A 1.25ghz i7 would beat a 4ghz p4 wink.gif

Clearly this cpu is no i7, but the point is the same tongue.gif

I must say, I'm rather dissapointed but not overly surprised by this.
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post #9 of 83
Having higher IPC then 360 and OoO execution would/should make it faster for basic game code then Cell and Xenon.

Don't for get that it has a more modern GPU so the CPU in Wii U doesn't need to be used for GPU like calculations like it does in PS3 and 360 as the GPU can take care of them with little CPU intervention.
post #10 of 83
Quote:
Originally Posted by B!0HaZard View Post

Yes. This tells us a lot about the performance. Appreciate the 6 decimal places.

This tells us all we need to know. The die size of this thing is around 32mm2 and it's being made on a 45nm process. Of course it's going to be slow.
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