hay installed a MSI GTX770 4gb
https://www.msi.com/Graphics-card/N770-TF-4GD5OC.html#hero-overview
today and seems to work fine ^^
only problem is now my fans are relay much more flakey than with my gtx 660 which is a pain
im using macs fan control to keep them stable but just want to check what safe/normal temps for the PSMI supply AC/DC supply 1 & 2 are.
in windows it reports clocks of 1200mhz at 70% power target and rock stable in benchmarks with MSI afterburner.
not a massive speed up from my 660 but a nice boost in the tests so far
In my 4,1, when the PSU is clean, PSU 2 temperature is always higher than PSU 1 temperature (in MacsFanControl), in the old version, they called the PSU 2 as PSU Components, and PSU 1 as PSU Ambient. Of course, I am not able to verify it these names are correct, but in my case Components' temperature always higher than Ambient, which make sense.
When the PSU is dirty (full of dust), these 2 temperatures will very close to each others.
This is the setting I am using now. My PSU 2 temperature usually idle at around 35C. Therefore, I use 35C as reference (idle 600RPM at 35C), and increase 100RPM per 1C (PSU 2 temperature). This will allow the PSU to go up to about 42C (as shown) when under stress.
If you want a cooler PSU (e.g. you don't mind more fan noise, or you have a lower ambient temperature), you may further lower both the min and max temperature.
If you want a quieter PSU, you can make something like min at 40C and max at 66C. In my own test, this can still keep the PSU always below 50C. And the PSU max temperature is way way higher than that. Keep it at low temperature is mainly to extend it's life, not because there is any danger.
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There's a reason why some GPU's are advised and others NOT.
Congratulations, you've got one you shouldn't have bought!
2x8pin really is the worst option you could have chosen.
Not necessary true.
Due 8 pins only means each 8pin may programmed to draw more than 75W, not necessary means that the card will draw way more than the a 6+8pin card.
In fact, a dual 8pin card can work better in some case.
e.g.
Card total draw 270W.
A) 6+8pin card, 70W from slot + 70W from 6pin + 130W from 8pin
B) dual 8pin, 70W from slot + 100W from each 8pin
In this case, card B can be powered internally with just 2x mini 6 -> 8pin cable. However, card A cannot.
Dual 8pin card usually build for more room to over clock, even the stock frequency not necessary significantly higher than the 6+8pin card.
thanks backups
