Post by zghost on Apr 1, 2006 3:27:14 GMT -5
I put the power supply in and did a few tests and so far I have seen a few differences.
I open ATI’s CCC and ran the overclocking program.
First with the 450W power supply every time I ran the overclocking program VPN recovery would kick in when the temps got over 91C and this happened at 682 cpu and 675 memory.
That’s with the fan mod I did, without it the card was going up around 96C and never got over 600 700.
Now with the 650W power supply I hit 689 cpu and 797 memory and the card never got over 61C during the overclocking process and VPN recover never kicked in.
Idle temps were at 47 to 48, sometimes up to 50 but before I change the power supply it was at 48.
After power supply it is staying at 46C.
Took about an hour to do with 30 minutes for cool down.
Call of Duty 2
Played it for 2 hours last night and the card got to 71C after playing and drop to 48C in 8 minutes. Tonight I played it for 2.5 hours and the card was at 62C and dropped to 46C in 5 minutes.
I have everything cranked up and with the 450W PS every so often I would get a small stutter in the game, maybe 3 an hour.
Tonight I did not see one after 2 hours.
3DMark 05.
No real change in my score but the temps are a lot lower then they were with the 450W PS and I ran it tonight with both power supplies, so no real temp change in the room.
Need to pull up FEAR and run it and the test to see if anything has changed.
ATI Tools.
This is the strange one, on the main page you can run a test for artifacts and you can watch the Amps that the GUP was using. With the 460W power supply it would stay right at 19.2. Now with the 650W power supply it jumps from 19.1 down to 16.4.
But the Voltage regulator temps are 7 to 8C cooler with the 650W PS.
450W # on the left, 650W # on the right
Input power. 8A vs. 12A
+5V 35.0A vs. 30.0A
+12VA rail is the same 17.0A
+12VB rail is the same
+5VFP 2.0A vs. 2.0A
-12V .8A vs. .5A
+3.3V is 40.0 A vs. 25A
So from looking at it the 450 has more amps on all the other voltages.
Combined.
+5 & +3.3 output power shall not exceed 240W vs.
I forgot to write this down, will see if I can see it later.
The 2 12 volt rails on the 450W PS max amps is 32A
It does not give max amps on the 650 and the 650 has 3 12V rails but it does say max power is 500 watts.
Is it worth the upgrade? Maybe as it does seem to keep the temps of the GPU and the voltage regulator down and I was able to overclock without having VPN kick in.
But the card was working well on the 450W power supply and really as long as you do not overclock the card to high it seems to run fine.
I am thinking about putting the dull core chip in the computer and for that you need the 650W power supply.
I also turned the one CPU fan around so it's blowing out of the case and added a 120 mm fan to the front of the case.
I open ATI’s CCC and ran the overclocking program.
First with the 450W power supply every time I ran the overclocking program VPN recovery would kick in when the temps got over 91C and this happened at 682 cpu and 675 memory.
That’s with the fan mod I did, without it the card was going up around 96C and never got over 600 700.
Now with the 650W power supply I hit 689 cpu and 797 memory and the card never got over 61C during the overclocking process and VPN recover never kicked in.
Idle temps were at 47 to 48, sometimes up to 50 but before I change the power supply it was at 48.
After power supply it is staying at 46C.
Took about an hour to do with 30 minutes for cool down.
Call of Duty 2
Played it for 2 hours last night and the card got to 71C after playing and drop to 48C in 8 minutes. Tonight I played it for 2.5 hours and the card was at 62C and dropped to 46C in 5 minutes.
I have everything cranked up and with the 450W PS every so often I would get a small stutter in the game, maybe 3 an hour.
Tonight I did not see one after 2 hours.
3DMark 05.
No real change in my score but the temps are a lot lower then they were with the 450W PS and I ran it tonight with both power supplies, so no real temp change in the room.
Need to pull up FEAR and run it and the test to see if anything has changed.
ATI Tools.
This is the strange one, on the main page you can run a test for artifacts and you can watch the Amps that the GUP was using. With the 460W power supply it would stay right at 19.2. Now with the 650W power supply it jumps from 19.1 down to 16.4.
But the Voltage regulator temps are 7 to 8C cooler with the 650W PS.
450W # on the left, 650W # on the right
Input power. 8A vs. 12A
+5V 35.0A vs. 30.0A
+12VA rail is the same 17.0A
+12VB rail is the same
+5VFP 2.0A vs. 2.0A
-12V .8A vs. .5A
+3.3V is 40.0 A vs. 25A
So from looking at it the 450 has more amps on all the other voltages.
Combined.
+5 & +3.3 output power shall not exceed 240W vs.
I forgot to write this down, will see if I can see it later.The 2 12 volt rails on the 450W PS max amps is 32A
It does not give max amps on the 650 and the 650 has 3 12V rails but it does say max power is 500 watts.
Is it worth the upgrade? Maybe as it does seem to keep the temps of the GPU and the voltage regulator down and I was able to overclock without having VPN kick in.
But the card was working well on the 450W power supply and really as long as you do not overclock the card to high it seems to run fine.
I am thinking about putting the dull core chip in the computer and for that you need the 650W power supply.
I also turned the one CPU fan around so it's blowing out of the case and added a 120 mm fan to the front of the case.
