Radeon HD 5970 Offers Massive Overclocking Headroom

laszlo · Nov 17, 2009

good job amd all i can say

TheMailMan78 · Nov 17, 2009

You know what would be more awesome than this?! If there were actual 58XX series cards on the F*#KING market to be bought!

TAViX · Nov 17, 2009

Nice! I'm curious about nVIDIA response. When it will come... Next year, or next millennium... :banghead:

btarunr · Nov 17, 2009

Kenshai said:
Btarunr said NDA lifts on the 19th, so I assume the card will be available around then as well at the new drivers.

Make that 18th

Izliecies · Nov 17, 2009

Hey, I thought that videocards are OCed with ATI Catalyst, not AMD OverDrive! Isn't that right?

TheMailMan78 · Nov 17, 2009

Izliecies said:
Hey, I thought that videocards are OCed with ATI Catalyst, not AMD OverDrive! Isn't that right?

Both from what I remember. Ether or.

Imsochobo · Nov 17, 2009

Amd clock tool is VERY reccomended download.

You can monitor min, avg, max temp of EACH core, and clock.

Its from AMD, and is widely available.

Then set your clocks in CCC

HossHuge · Nov 17, 2009

Anyone know how long this it is?

FreedomEclipse · Nov 17, 2009

If the price is good - I might be getting one of these instead of a 5870

sideeffect · Nov 17, 2009

W1zzard said:
those numbers are no hard limit.. given a decent psu (any) you can easily overdraw the external power connectors without any harm. 150w from a single 6 pin is no problem.
if an intel cpu is specced to 3 ghz and you can run it at 4.5g you dont ask "where do the mhz come from?"

No offence but that analogy sucks

The extra MHz on the CPU comes from giving it more power. You could perhaps lower the Vcore and add MHz and keep at the same power draw but you are not getting something for nothing. You are limited by the amount of power + how efficiently the device can utilise the available power.

You can draw 150w from a single 6 pin no problem? Evidence please because from what I have seen with my ATI 4850 which had 1 x 6 pin this was not the case and it was power starved. I was using a 1KW OCZ ProXtreme to power it as well.

TheMailMan78 · Nov 17, 2009

sideeffect said:
No offence but that analogy sucks

The extra MHz on the CPU comes from giving it more power. You could perhaps lower the Vcore and add MHz and keep at the same power draw but you are not getting something for nothing. You are limited by the amount of power + how efficiently the device can utilise the available power.

You can draw 150w from a single 6 pin no problem? Evidence please because from what I have seen with my ATI 4850 which had 1 x 6 pin this was not the case and it was power starved. I was using a 1KW OCZ ProXtreme to power it as well.

Oh man you just pwnd yourself nasty!

sideeffect · Nov 17, 2009

TheMailMan78 said:
Oh man you just pwnd yourself nasty!

Do you even know what we were talking about?

mechtech · Nov 17, 2009

HossHuge said:
Anyone know how long this it is?

loooonnnnngggg lol

AddSub · Nov 17, 2009

sideeffect said:
I will believe it when I see it.

Same here.

Source? "XtremeSystems Forums"? I'm reserving my judgment for after this thing is benchmarked by some respected sites like iXBT Labs or similar.

TheMailMan78 · Nov 17, 2009

sideeffect said:
Do you even know what we were talking about?

Yeah I know what your talking about. I also know W1zz is the owner of the website and has a vast amount of experience and wouldn't be talking out of his ass. I am far more inclined to take his word over yours.

Saying his "analogy sucks" isnt the smartest thing to do.

phanbuey · Nov 17, 2009

TheMailMan78 said:
Yeah I know what your talking about. I also know W1zz is the owner of the website and has a vast amount of experience and wouldn't be talking out of his ass. I am far more inclined to take his word over yours.

Saying his "analogy sucks" isnt the smartest thing to do.

+1 to that...

Sideeffect, Just how was that 4850 was "power starved"? did you volt mod it? or just because you couldn't overclock it past whatever MHz you assumed that the chip was not getting enough power?

Ive seen 4pin cpu plugs melt with too much power going through them and I can attest to the fact that a plug will give as much power to a device as it draws until the PSU doesnt give it anymore/plug melts...

Maybe your PSU had a hard limit on the 6 pin of 75W... iDK, I know mine doesn't.

Zubasa · Nov 17, 2009

Imsochobo said:
Amd clock tool is VERY reccomended download.

You can monitor min, avg, max temp of EACH core, and clock.

Its from AMD, and is widely available.

Then set your clocks in CCC

If there is no "OC limit" in CCC, I might as well use MSI Afterburner which is the tool of choice for me. :toast:

wolf · Nov 17, 2009

Zubasa said:
If there is no "OC limit" in CCC, I might as well use MSI Afterburner which is the tool of choice for me.

Seconded, if there is voltage control, clocks up to 1ghz/6ghz, then Afterburner is already perfect to take care of that. tool of choice f'sho'

W1zzard · Nov 17, 2009

sideeffect said:
No offence but that analogy sucks

The extra MHz on the CPU comes from giving it more power. You could perhaps lower the Vcore and add MHz and keep at the same power draw but you are not getting something for nothing. You are limited by the amount of power + how efficiently the device can utilise the available power.

You can draw 150w from a single 6 pin no problem? Evidence please because from what I have seen with my ATI 4850 which had 1 x 6 pin this was not the case and it was power starved. I was using a 1KW OCZ ProXtreme to power it as well.

power starved doesn't even exist .. power is a function of current and voltage, when you increase the current drawn, the voltage at your endpoint drops due to the resistance in the wire. if you draw too much power either the voltage drops below a value that the card's voltage regulations circuitry need to work reliable, or your wires will heat up and burn. if you want more detailed physics formulas let me know.

when i have a few minutes i'll try to power tomorrow's card through a single 6-pin molex

TheMailMan78 · Nov 17, 2009

W1zzard said:
power starved doesn't even exist .. power is a function of current and voltage, when you increase the current drawn, the voltage at your endpoint drops due to the resistance in the wire. if you draw too much power either the voltage drops below a value that the card's voltage regulations circuitry need to work reliable, or your wires will heat up and burn. if you want more detailed physics formulas let me know.

when i have a few minutes i'll try to power tomorrow's card through a single 6-pin molex

Exactly. If the 4850 was truly "starved" for power it wouldn't run reliable OR wouldn't work at all. Also adding voltage can have the reverse effect on circuits. Maybe THIS is why it only had one PCI-E connector?

If your PCI-E power cord wasnt supplying enough power I would look at your PSU. Also it may have been supplying the power but the power may have been "dirty". Watch them ripples son

[I.R.A]_FBi · Nov 17, 2009

TheMailMan78 said:
Exactly. If the 4850 was truly "starved" for power it wouldn't run reliable OR wouldn't work at all. Also adding voltage can have the reverse effect on circuits. Maybe THIS is why it only had one PCI-E connector?

If your PCI-E power cord wasnt supplying enough power I would look at your PSU. Also it may have been supplying the power but the power may have been "dirty". Watch them ripples son

oh, ripples

W1zzard · Nov 17, 2009

TheMailMan78 said:
Exactly. If the 4850 was truly "starved" for power it wouldn't run reliable OR wouldn't work at all. Also adding voltage can have the reverse effect on circuits. Maybe THIS is why it only had one PCI-E connector?

If your PCI-E power cord wasnt supplying enough power I would look at your PSU. Also it may have been supplying the power but the power may have been "dirty". Watch them ripples son

adding extra connectors does not increase the voltage (parallel circuit). all it does is add more wire diameter which reduces resistance which allows more current per °C temp increase which allows more current to flow before your cables melt

TheMailMan78 · Nov 17, 2009

W1zzard said:
adding extra connectors does not increase the voltage (parallel circuit). all it does is add more wire diameter which reduces resistance which allows more current per °C temp increase which allows more current to flow before your cables melt

It safety increases the flow of power correct? As each connection is rated to a maximum voltage/current?

What I meant by "only having one PCI-E" connector wasn't to increase voltage but to maintain the integrity of the power connection.

W1zzard · Nov 17, 2009

yes, it is specified to a maximum current (google for awg 18), specified means you can run it outside of spec, a realistic limit is when the cables get hot to the touch, the physical limit is when the insulation starts to burn or melt->the wire touches some ground bzzzt

IceCreamBarr · Nov 17, 2009

Does anyone find it odd that with the total power from the pci-e slot (75W), the 6 pin (75w) and the 8 pin (150w) that there is only an additional 6w left for overclocking (using their 294w max)? I'm not sure what kind of overclock 6w will bring you but then again, does taking the card to the max power draw even sound intelligent? By design, this card sounds like an overclocking dud.

Barr

EDIT: Oh, I see this is already being discussed - I guess reading only the first page leads to dupe posts

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Radeon HD 5970 Offers Massive Overclocking Headroom

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