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Where's the L3 cache?
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Forum Regular
Join Date: Oct 2002
Location: Netherlands (The Hague)
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What happend to the L3 cache? Can't seem to find it on the tech specs page.
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Powered by a 15" alu powerbook superdrive
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Forum Regular
Join Date: Sep 2003
Location: canada
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thank you, I need to know what happened to the L3 cache as well, or my waiting around has been completely pointless!
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Moderator Emeritus
Join Date: Dec 2000
Location: College Park, MD
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Looks like it vanished due to cost cutting.
*Smacks Apple*
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Junior Member
Join Date: Jun 2002
Location: geneva, switzerland
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Maybe they have put in the 7447 instead of the 7457.. so Motorola still have problems with the 7457..
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Senior User
Join Date: Jul 2002
Location: LA
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Yup, L3 cache is a big performance booster. Win some lose some.
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One iMac, iBook, one iPod, way too many PCs.
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Forum Regular
Join Date: Sep 2003
Location: canada
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serious? apple cut the L3 cache (smack apple back-hand styles!) or the chip is changed making the L3 no longer necessary. I would have been better off buying 3 months ago had I known L3 was to be cut. Damn you apple if this is true!
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Mac Enthusiast
Join Date: May 2002
Status:
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I have Mac
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Junior Member
Join Date: Jun 2002
Location: geneva, switzerland
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Thanks for the link - and thank apple that it is the 7457 processor.. I was getting worried
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Moderator Emeritus
Join Date: Dec 2000
Location: College Park, MD
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The US and british pages don't match.
They have quite a few specs listed differently. I guess we have to wait until it is sorted out.
The US applestore lists 512KB L2, and no L3.
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Grizzled Veteran
Join Date: Sep 2000
Location: Adelaide, Australia
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Originally posted by crispinwilliams:
Thanks for the link - and thank apple that it is the 7457 processor.. I was getting worried
Whats this mean ? There is nothing
on the US tech specs about L3 cache.
Michael
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Mac Elite
Join Date: Oct 2000
Location: Australia
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Interesting that the UK site talks about Level 3 cache, while the US site (take out the "/US") talks about the 512K of Level 2 cache. As does the specs PDF.
Confused?!
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Mac Elite
Join Date: Oct 2000
Location: Australia
Status:
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3 simultaneous posts about the Level 2/3 cache anomaly. Everyone's concerned!
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Grizzled Veteran
Join Date: Oct 2001
Location: Michigan
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The 7457 is not suppose to have L3 but AFAIK true DDR and a 512 L2; the older current chip has "fake DDR" but an L3 cache
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Pismo 400 | Powerbook 1.5 GHz | MacPro 2.66/6GB/7300GT
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Moderator Emeritus
Join Date: Dec 2000
Location: College Park, MD
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Originally posted by tkmd:
The 7457 is not suppose to have L3 but AFAIK true DDR and a 512 L2; the older current chip has "fake DDR" but an L3 cache
Sigh, there's no such thing as 'fake DDR'. Either the memory is DDR or it's not. The FSB isn't double pumped.
And again from apple's site (no, I didn't study this, it took about one minute to read the whole thing), it says 133FSB for the 12" and 166FSB for the 15" and 17". So I'd say it's not a double pumped FSB.
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Mac Elite
Join Date: Oct 2000
Location: Australia
Status:
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Originally posted by tkmd:
The 7457 is not suppose to have L3 but AFAIK true DDR and a 512 L2; the older current chip has "fake DDR" but an L3 cache
So, 512K Level 2 is better than 1MB Level 3.
Does this apply to most software that benefited from Level 3 (the reason was the original 12" was sluggish in some games / Virtual PC)?
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Moderator Emeritus
Join Date: Dec 2000
Location: College Park, MD
Status:
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7457 = 512KB L2 cache and SDR FSB.
7457RM = 512KB L2 cache and a DDR FSB.
I think these systems have the 7457.
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