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4850/4870 seperate shader clocks??!!

Last response: in Graphics & Displays
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June 18, 2008 8:24:13 AM

Is this common knowledge???...I had heard a rumour that they might have separate shader frequencies, but i thought it was just hype..

It seems that the 4850 does have a separate shader clock of 825mhz when its core is 625.

This must be very good news as not only does it have 1.5* the shader count of the 3870, but those shaders are going to be put to better use...

Probably old news but hey.
a b U Graphics card
June 18, 2008 11:55:43 AM

I heard that too, but I have no idea. I have pretty much given up trying to understand this card until release day. Stupid NDA. Normally they try to "leak" a little more than this.
June 18, 2008 12:12:45 PM

New $200 cards. Seems good with 480SP, can't believe I built by PC just before these new cards came out. Can we really trust "leaked information"?
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June 18, 2008 12:40:07 PM

Well the only thing that iam going on is the listing on the german website

Chiptakt: 625MHz, Speichertakt: 1143MHz, Shadertakt: 825MHz • Chip: RV770 Pro

Whilst it may be false, i think it has a decent chance of being correct. The memory must also be ddr4 if this is to be believed...which seems reasonable...ati are unlikely to go with ddr3 imo.

I may be jumping the gun, but I think that ati might have an ace up there sleeves with these cards.

June 18, 2008 1:17:01 PM

In my experience, when there is such little "leaked" info so close to the release date it means that the product isn't as great as everyone thinks and they are hoping to create some hype to rise initial sales.

So, I'm holding my wallet very very thigtly until about a month after release when there are new drivers and tons of benchamrks
a b U Graphics card
June 18, 2008 1:21:11 PM

Yes, separate shader clocks. Also, it's 800SP, not 480. Not sure what all of them are doing (physics) but 800 is certain. There are already reviews floating around from those without NDAs...
June 18, 2008 1:41:09 PM

pcgamer12 said:
New $200 cards. Seems good with 480SP, can't believe I built by PC just before these new cards came out. Can we really trust "leaked information"?


The reason a lot of the sites are reporting 480sp vs 800sp, is that until a recent software update, the testing software only reported 480sp. 800sp is pretty much fact even if it is leaked.
a b U Graphics card
June 18, 2008 1:44:44 PM

RAM in 4850 is DDR3, RAM in 470 is DDR5. No DDR4, at least not in the reference design, manufacturers might modify it. Like the DDR2 8600GT
June 18, 2008 2:05:52 PM

Manufactures can put whatever type they want in it. The chip supports GDDR3 4 and 5. Im willing to bet the majority of these are GDDR4.
a b U Graphics card
June 18, 2008 3:43:39 PM

Actually, I think the 4870 uses GDDR5 in at least one version. That is why it will be in short supply at first, because GDDR5 is in short supply.
June 18, 2008 4:07:49 PM

yea that is too bad, as that 4870 is looking mighty hot, and so is 4850 CF
!