I think you may have an issue overclocking the card, once you put the card under load. You will probably be limited on your overclock.
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5970 OCing
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hi all.....
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i have a quick power query regarding this card.??
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this graph shows the power required in relation to the clock speed, now i only have a PCI-E 1.1 slot, so all in (1x 6pin = 75w)(1x 8pin = 150w)(PCI-E 1.1 = 75w) = 300w...
ok...so the question is when i go to OC the card b/c there's not enough power for it on the slot, could the card pull through more power from either the 6pin or the 8pin to compensate..??
my 850w PSU is heavy duty & currently im only drawing 175w idle & 301w load with the GTX260..... so there's plenty of play there..
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i have a quick power query regarding this card.??
this graph shows the power required in relation to the clock speed, now i only have a PCI-E 1.1 slot, so all in (1x 6pin = 75w)(1x 8pin = 150w)(PCI-E 1.1 = 75w) = 300w...
ok...so the question is when i go to OC the card b/c there's not enough power for it on the slot, could the card pull through more power from either the 6pin or the 8pin to compensate..??
my 850w PSU is heavy duty & currently im only drawing 175w idle & 301w load with the GTX260..... so there's plenty of play there..
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Quote:
How can you tell the card is actually pulling 175w? If you're looking at a kill-a-watt meter, or something similar, you're looking at how much wattage is being pulling from the wall. Efficiency is not accounted for, and going by your PSU, you don't list a brand so I'm assuming it's just a lower quality generic, which isn't very efficient.
Long story made short, your GTS 250 doesn't draw 175w.
Originally Posted by Al8888 Does it really work that way? if thats true then i should have a problem because at stock my gts 250 pulls 175 watts at load and i have pci-e 1.1 and one 6 pin connector which means just 150 watts. And with an overclock it would be even more but i can overclock fine. Can someone confirm this. |
Long story made short, your GTS 250 doesn't draw 175w.
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my board is the next thing to be upgraded.... so im not too worried about its current shortcomings, i know it will run perfectly at the default 725/4000, so that'll do until my board is changed.
i was just wondering if it was possible to augment more power from one of the plugs..??
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Originally Posted by ZealotKi11er Don't even bother either bother with PCIE 1.1, Even a 5870 will be bottle necked there. |
i was just wondering if it was possible to augment more power from one of the plugs..??
i guess what im asking is.....are the 6pin / 8pin plug voltages fixed..??, or will they give more if needed..??
another question too......
im gonna need a good CFX 775 mobo (with PCI-E 2.0) ??
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another question too......
im gonna need a good CFX 775 mobo (with PCI-E 2.0) ??
no one....???
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Quote:
http://www.techpowerup.com/reviews/A...xpress_Scaling
Originally Posted by ZealotKi11er Don't even bother either bother with PCIE 1.1, Even a 5870 will be bottle necked there. |
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cheers pal.......
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according to this, these new 5 series cards are actually designed for (8x PCI-E 2.0) = (16x PCI-E 1.1), so i should be fine...
look....there's hardly no difference between 16x & 8x ''2.0'' speeds..
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Attachment 130088
Originally Posted by Azazel http://www.techpowerup.com/reviews/A...xpress_Scaling |
according to this, these new 5 series cards are actually designed for (8x PCI-E 2.0) = (16x PCI-E 1.1), so i should be fine...
look....there's hardly no difference between 16x & 8x ''2.0'' speeds..
Attachment 130088
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furthermore.......
by the looks of it i can probably utilize the 4x secondary slot i have with a 5750/70 for ''Trifire''
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, & keep my current board...
Originally Posted by darksideleader the difference is minimal, but the results might differ from x2 cards because they likes the bandwidth. The only qualm here is maximum wattage that can be supplied to the card which is 300w on a PCI-Express 1.0 slot limiting your maximum overclock. This honestly shouldn't matter too much to ya because the performance of a stock 5970 is quite stellar already. |
by the looks of it i can probably utilize the 4x secondary slot i have with a 5750/70 for ''Trifire''
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Still that's one card and 5970 is much much more bandwidth hungry just like the 4870X2
Originally Posted by skunksmash cheers pal.......
according to this, these new 5 series cards are actually designed for (8x PCI-E 2.0) = (16x PCI-E 1.1), so i should be fine... look....there's hardly no difference between 16x & 8x ''2.0'' speeds..
Attachment 130088 |
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yeah.....you could well be right....
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, well i'll see how it goes, if bandwidth is bogged down too much i'll just run the 260 until i get a new board..
any suggestions on a CFX 775 PCI-E 2.0 board..???
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any suggestions on a CFX 775 PCI-E 2.0 board..???
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Both 6 and 8 pin plugs can exceed 75W/150W respectively but it is not a lot and depends on how good your psu is. It's a amperage draw issue and better psu's can deliver more than rated.
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The last 3 ATI generations have been designed for pci-e 2.0. Along with being right at the edge of powering the card with pci-e 1.1, you will be running the card at pci-e 8X, where your performance of the card will be reduces some 1 to 12%, depending on the game title.
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Do yourself a favor and get a pci-e 2.0 mobo since you are behind and will somewhat hinder most of the current cards. If you have $600-$700 to get a 5970, you should have $100-$150 fro a new mobo.
Radeon HD 5970 Overclocking Guide
Originally Posted by skunksmash i guess what im asking is.....are the 6pin / 8pin plug voltages fixed..??, or will they give more if needed..?? another question too...... im gonna need a good CFX 775 mobo (with PCI-E 2.0) ??
|
Quote:
Originally Posted by skunksmash cheers pal.......
according to this, these new 5 series cards are actually designed for (8x PCI-E 2.0) = (16x PCI-E 1.1), so i should be fine... look....there's hardly no difference between 16x & 8x ''2.0'' speeds..
Attachment 130088 |
Quote:
Originally Posted by skunksmash furthermore....... by the looks of it i can probably utilize the 4x secondary slot i have with a 5750/70 for ''Trifire''
|
Radeon HD 5970 Overclocking Guide
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cheers...
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ok....so i need a mobo recommendation, its needs to be PCI-E 2.0 / CFX @ 8x or more / skt775..??
i cant afford an i7 setup yet, so i need to use the DDR2 & the 775 CPU..??
any ideas..???
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Originally Posted by rico2001 Both 6 and 8 pin plugs can exceed 75W/150W respectively but it is not a lot and depends on how good your psu is. It's a amperage draw issue and better psu's can deliver more than rated. The last 3 ATI generations have been designed for pci-e 2.0. Along with being right at the edge of powering the card with pci-e 1.1, you will be running the card at pci-e 8X, where your performance of the card will be reduces some 1 to 12%, depending on the game title. Do yourself a favor and get a pci-e 2.0 mobo since you are behind and will somewhat hinder most of the current cards. If you have $600-$700 to get a 5970, you should have $100-$150 fro a new mobo. Radeon HD 5970 Overclocking Guide |
ok....so i need a mobo recommendation, its needs to be PCI-E 2.0 / CFX @ 8x or more / skt775..??
i cant afford an i7 setup yet, so i need to use the DDR2 & the 775 CPU..??
any ideas..???
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