techead
Honorary Master
What about going from a 4850 to a GTX570?
shew thats gonna be quite nice
dx 11 for starters... nvm the actual speed
South Africa’s biggest forum. Discuss, discover, and connect with thousands of members.
What about going from a 4850 to a GTX570?
What about going from a 4850 to a GTX570?
R2.8k for a brand new GTX570SSC is one awesome price!
I'm now selling my HD 6970 for R2800 (excl shipping) if anyone is interested -> http://mybroadband.co.za/classified...uct=21133&title=asus-hd6970-directcu-ii&cat=3
Got a weird thing happening. Installed the GTX 570, installed the latest nVidia drivers from their website and now it is crashing as soon as I open Firefox and then restarts.
Let me guess...
.. new PSU?
The graphics card is designed for 219W TDP, so it should need only like 20A on the +12A rail, unless you overclock it of course.
I would've guessed that even an under spec'd 550W PSU would suffice. I would suggest that you rather borrow someone's PSU before replacing it for something that might not fix the problem.
How many hard drives do you have in your PC, and are you overclocking your CPU?
A Corsair CX600 would be more than enough for an i5 2500k + GTX570 + 4x HDD + overclocking.
---
For those who are interested in knowing how to calculate the power consumption difference between stock speed & over clocking speeds:
Here's a simple equation for working out the power consumption: P = C(V^2)f, where C is the Capacitive resistance, the V is the Voltage and f is the frequency.
Typically you'll be supplied with the TDP value. Normally the GPU/CPU would perhaps use up to 90% of that TDP value, which is why the PSU calculator sites usually provide you with this as the default value. eg. 'CPU Utilization' value at http://extreme.outervision.com/psucalculatorlite.jsp. You'll also notice that they ask you to input the stock voltage & frequency, as well as the overclocked voltage & frequency , which the equation uses
eg. GTX460 1GB's TDP value is 160W @ 0.975V, 675MHz.
So you can work out the C value: C = ( P * 90% ) / ( (V^2) * f) = 144W / ( ( 0.975V ^ 2 ) * 675MHz ) = 0.22441
Now when you OC the card to 850MHz @ 1.025V, the power consumption would increase to: P = 0.22441 * ( 1.025V ^ 2 ) * 850MHz = 200.4 W
You can use the same equation for CPU's![]()
A TX650 would be more than enough for a high end single GPU card.
750W is what you get for dual graphics cards, and 850W for like high end dual graphics cards.
If your 700W PSU has multiple (not just 2) 6-pin PCI-E connectors, then you might want to try 1x 6-pin PCI-E connector from the 1 cable and another from a second cable, because they might be on separate +12V rails.