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Hardware Hacking The hammer and tongs school of Overclocking. (NOT for the beginner and you assume all risks)


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  #1 (permalink)  
Old 5th December, 2005, 06:39 PM
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GDDR4 Becoming mainstream.

Hynix announced that they are sampling 512bit GDDR4 on friday. This is news, real news, as the only other IC-maker to have such a product is...none! Samsung is currently sampling 256bit chips, with an expected "full availability" in Q2 2006. Hynix plans the same for it's 512bit chips in about the same timeframe.
Here's a quote from Digitimes:
Quote:
GDDR is a high-speed graphics DRAM that processes moving pictures and graphic data in personal computers and game consoles. The fourth-generation graphics memory GDDR4, which improves data processing speed by close to two times than that of GDDR3, is ideal for 64-bit computer operating systems that manage vast amounts of data at once. The Hynix’s 16Mx32 512Mbit GDDR4 operates at 2.9Gbps and processes 11.6 Gigabytes of data in one second.
This is exciting for me, as it means we may see videocards featuring this mem next year, as the design of the current ATI R5xx-based GPU's memory controller already supports both GDDR3 and GDDR4. Dual 16x pci-e slots, high-bandwidth GDDR4, and the "ringbus" ATI memory-controller may also mean an end to "external" connections for multi-gpu rendering.

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Old 5th December, 2005, 09:12 PM
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sweet!
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Old 5th December, 2005, 10:41 PM
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I'm an nvidia fanboy. I think they hold something up thier sleaves. I think ATI has beaten them here however.
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Last edited by madcatmk3; 6th December, 2005 at 12:29 AM. Reason: confusion
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Old 5th December, 2005, 10:43 PM
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GDDR4 is for graphics cards only, madcatmk3. I don't think Intel makes GPUs.

BTW, Why'd you stop folding..?
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Last edited by Exile69; 5th December, 2005 at 10:48 PM. Reason: Question came to mind...
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Old 5th December, 2005, 10:48 PM
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oops that was a mistake. I was talking to a friends about the new intel 975 while typing about GDDR4
ANyway I think Nvidia will be quick to support it into their GPU designs as it's almost identical to GDDR3 so you'll prbly see the 7800 getting it (mabey compaines will upgrade it for a small fee).
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Old 5th December, 2005, 10:58 PM
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Old 6th December, 2005, 12:25 AM
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great make me look like an idiot o the front page thanks gizmo.
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Old 6th December, 2005, 12:26 AM
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Quote:
Originally Posted by Exile69
BTW, Why'd you stop folding..?
My dad doesn't want me to put FAH on my media center PC since it's his and my alienware is off since I had to disconnect it while I get my custom built up and running.
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Old 6th December, 2005, 03:24 AM
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nvidia seems to be a far different company than a few years ago (the fx series *shudder*) I doubt they'll be far behind ati when moving to gddr4, especially being that the 512mb gtx did beat the x1800xt in all tests (though only marginally while being 100$+ more expensive) but it'll be interesting to see who drops it in a card first.

I'm a total ati fanboy but their release dates being eternally pushed back while nvidia always releases on time is getting more and more annoying. lol
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Old 6th December, 2005, 10:01 PM
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nvidia doesn't realse on time they just deny thier malking a new chip. Then realse it when they want.
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Old 6th December, 2005, 11:15 PM
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Method behind the ringbus. ATi's true counter attack will be the R580. I can't wait to see how it turns out.
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Old 7th December, 2005, 02:11 AM
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There have been alot of compalints lately towards both sides of the graphics front due to delayed/missing/unavailable products, but most don't understand what goes on behind the scenes. I know the development of this ram has been going on for a few years now, and in my adventures to gaming i realize that truly what we need is more bandwidth for GPU's running hihger resolutions, and for large-detail shaders. This stuff, and the ringbus, i think, may jsut bring the quality that i have been looking for for a long time.
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Old 7th December, 2005, 11:49 AM
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The problem is that having RAM off the main core causes the bandwidth restrictions. GDDR4 doesn't bring much more then a few evolutionary changes to the GDDR specification. In many ways, progress seems to be limited to tweaking what's out there currently.

The ringbus effectively creates a memory controller with multiple banks, which strongly reminds me of an integrated version of AMD's Opteron cross processor communications. In that, each processor has it's own memory controller (and hopefully local memory) which can provide access to the local memory to another processor.

The disadvantage of this is the cost. Moving from a 256bit interface to four 128bit interfaces increases the wiring complexity and package costs. For a top-end card, that isn't really an issue. For a mid-range or low-end card, it's much more of an issue!
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Old 7th December, 2005, 05:04 PM
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I"m just imagining not only the price hike, but the transistor count as well.
Honestly, the markets stagnent, nothing really original has come out in quite some time...at least, no newer technology (available) that has got me going..
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Old 7th December, 2005, 10:26 PM
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I wonder what Nvidia has planned to counter ATI R580? Nobody suspected the 512mb 7800 GTX.
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Old 8th December, 2005, 02:13 AM
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Quote:
Originally Posted by Exile69
BTW, Why'd you stop folding..?
I just put Fah on I'll see how it goes. I'm going to have to take it off once we start using the PC with the TV.
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Old 8th December, 2005, 02:21 AM
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then again at 20mins a frame as opposed to my P4 7mns I'll take it off when we put the TV tuner in.
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WMCE
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Old 8th December, 2005, 03:40 AM
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Quote:
Originally Posted by madcatmk3
I wonder what Nvidia has planned to counter ATI R580? Nobody suspected the 512mb 7800 GTX.
Word is Q1 for R580. So I imagine we'll start seeing some deatils in October '06.
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Old 8th December, 2005, 11:10 PM
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Actually, the 512mg 7800GTX was expected by far.
Look at how long 256 cards had been out. So without an refreshed designs or pipe increases, doubling the VRAM was the next logical step (aside from an increase in clocks too)

I have a feeling ATI will deliver the goods this time around (thank god)
There's too much pressure and they know the last couple of generations havent been up to "snuff" or on time...all eyes on them
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