hi,i am planning to buy a readon HD7750 gpu to replace my Nvidia Geforce 210,i have a lenovo acbel pc6001 psu with max voltage of 280w...i would like to know weather my current psu will be enough to support readon HD 7750 or should i purchase a new one..pls advise
280w for HD 7750?
- Thread starter jason1794
- Start date
stickg1
Splendid
- Mar 7, 2012
- 6,384
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That's not the worst OEM PSU I've ever seen. The 7750 and i3 sip power. In fact heres a screen shot of my 3770K @ 4.5GHz and my GTX 660 overclocked 10% (both of which use a lot more power than his components) only using 220w under full load folding.
It wouldn't be a bad idea to go for a 350w unit with a more reliable build quality.
It wouldn't be a bad idea to go for a 350w unit with a more reliable build quality.
RetiredChief
Judicious
- Feb 22, 2007
- 8,528
- 0
- 32,960
First, Your system is INDEED low power (Less than what is indicated below):
quote
Measured power consumption R7750
1.System in IDLE = 155W
2.System Wattage with GPU in FULL Stress = 188W
End quote: Reference: http://www.guru3d.com/articles_pages/amd_radeon_hd_7750_and_7770_review,7.html
Using the 188 Watts vs your 280 Watts = 188/280 is 68 % Utilization which is FINE.
However total power is NOT what you need to look at, NEED to Check your +12V rails.
1) The Majority of Power is derived from The +2V Rail where the biggest power consumtion is from the GPU and the GPU. You have a Low wattage CPU + GPU. My best quess is these two will draw around (CPU Max TDP 65 Watts - You will be less) and (GPU around 45 Watts) + say 50 watts for All other +12V = Approx 160W
.. This tells me that the Min requirements that you should use is 160+30% = 208W. This means that the +12V rails should be rated to provide at least 210W (If you have multiple 12V rails (ie +12V1 and a +12V2) add the two to gether.
LOOK at the sticker on the PSU, or google a review of Your PSU!!
.. LOW quality PSUs over rate their MAX Power listed values. That is they rate them @ approx 22C NOT at the +40C rating used by Quality PSU. This means that as the PSU is sed and the temperature of it's components goes up, the Amount of power it can provide is decreased (called deregulation). Bottom line poor quality PSUs can only provide about 60->75% of their rated value.
.. Anther problem with Power supply listed value is - Add up what they tell you each rail can supply and you will find that Number EXCEEDs the PSU total rating which means that it cannot provide total power if each rail is maxed out.
Also from the link:
"•Radeon HD 7770 - On your average system the card requires you to have a 450 Watt power supply unit." You have the 7750 so subtract 50 Watts = 400 Watts which is for a AVERAGE quality PSU.
Bottom Line: Your 280 Watt will probably work, but
For a Quality PSU I would recommend a 300->350 Watt PSU.
Added: Looks like your 7750 will add about 30 Watts more Pwr consumption on the +12V rail than your 210 GPU - If that is any help.
quote
Measured power consumption R7750
1.System in IDLE = 155W
2.System Wattage with GPU in FULL Stress = 188W
End quote: Reference: http://www.guru3d.com/articles_pages/amd_radeon_hd_7750_and_7770_review,7.html
Using the 188 Watts vs your 280 Watts = 188/280 is 68 % Utilization which is FINE.
However total power is NOT what you need to look at, NEED to Check your +12V rails.
1) The Majority of Power is derived from The +2V Rail where the biggest power consumtion is from the GPU and the GPU. You have a Low wattage CPU + GPU. My best quess is these two will draw around (CPU Max TDP 65 Watts - You will be less) and (GPU around 45 Watts) + say 50 watts for All other +12V = Approx 160W
.. This tells me that the Min requirements that you should use is 160+30% = 208W. This means that the +12V rails should be rated to provide at least 210W (If you have multiple 12V rails (ie +12V1 and a +12V2) add the two to gether.
LOOK at the sticker on the PSU, or google a review of Your PSU!!
.. LOW quality PSUs over rate their MAX Power listed values. That is they rate them @ approx 22C NOT at the +40C rating used by Quality PSU. This means that as the PSU is sed and the temperature of it's components goes up, the Amount of power it can provide is decreased (called deregulation). Bottom line poor quality PSUs can only provide about 60->75% of their rated value.
.. Anther problem with Power supply listed value is - Add up what they tell you each rail can supply and you will find that Number EXCEEDs the PSU total rating which means that it cannot provide total power if each rail is maxed out.
Also from the link:
"•Radeon HD 7770 - On your average system the card requires you to have a 450 Watt power supply unit." You have the 7750 so subtract 50 Watts = 400 Watts which is for a AVERAGE quality PSU.
Bottom Line: Your 280 Watt will probably work, but
For a Quality PSU I would recommend a 300->350 Watt PSU.
Added: Looks like your 7750 will add about 30 Watts more Pwr consumption on the +12V rail than your 210 GPU - If that is any help.
RetiredChief
Judicious
- Feb 22, 2007
- 8,528
- 0
- 32,960
1) Adding up all the individual rails = 363 Watts but limited to 280 Watts max
2) Looking at just the +5 +3.3 and +12 v Limited to 264 watts (+12V is 216 W)
.... Anything over 48 Watts on +5 and +3.3 would Decrease available power from +12V
3) This PSU most likely falls in the Tier 4, at best tier 3 Catagory.
My Guess is it would work, HOWEVER I would REPLACE at earliest time (can afford) with a Quality 350+ PSU.
Simple test:
.. DO not initially run a game.
.. Download a program to display the +12 V (Most motherboards come with a utility to monitor temps/voltages). Alternative would be to down load HWMonitor. Install and run.
Link For HWMonitor: http://www.cpuid.com/softwares/hwmonitor.html
.. With the computer @ idle look at the +12 V rail. Should not be less than 11.6 V (spec goes down to 11.4 V). If +12 V => 11.6 V then.
.. Run a game (personally to test I download and run Furmark in a window). Three Criteria.
(A) +12 V should NOT go below +11.6 V
(B) Regulation: Drop beween Idle and Load not exceed 0.3 V. For example if @ Idle the +12 V was 12.1 V (Great), then when loaded the Voltage drops to 11.7, which is still within spec, the Drop of 0.4 V is cause to reject.
(C) Above is OK, then rung for say 30 Min and recheck value (indicates will hold up as temperature increases. NOT in addition to monitoring +12 V, also monitor Temps for both the CPU and The GPU.
2) Looking at just the +5 +3.3 and +12 v Limited to 264 watts (+12V is 216 W)
.... Anything over 48 Watts on +5 and +3.3 would Decrease available power from +12V
3) This PSU most likely falls in the Tier 4, at best tier 3 Catagory.
My Guess is it would work, HOWEVER I would REPLACE at earliest time (can afford) with a Quality 350+ PSU.
Simple test:
.. DO not initially run a game.
.. Download a program to display the +12 V (Most motherboards come with a utility to monitor temps/voltages). Alternative would be to down load HWMonitor. Install and run.
Link For HWMonitor: http://www.cpuid.com/softwares/hwmonitor.html
.. With the computer @ idle look at the +12 V rail. Should not be less than 11.6 V (spec goes down to 11.4 V). If +12 V => 11.6 V then.
.. Run a game (personally to test I download and run Furmark in a window). Three Criteria.
(A) +12 V should NOT go below +11.6 V
(B) Regulation: Drop beween Idle and Load not exceed 0.3 V. For example if @ Idle the +12 V was 12.1 V (Great), then when loaded the Voltage drops to 11.7, which is still within spec, the Drop of 0.4 V is cause to reject.
(C) Above is OK, then rung for say 30 Min and recheck value (indicates will hold up as temperature increases. NOT in addition to monitoring +12 V, also monitor Temps for both the CPU and The GPU.
If you want a better GPU than the 7750 you will need a new PSU as well. Your AcBel is really only worth 216W (if everything running on the 12V rail needs more than that, youre going to have a problem) I'd replace it even with just a 7750.
10000 rupees
pls forgive me cause im new to all this stuff......i found this website which contains all da info about my psu...can u tell me if radeon 7750 will work on dat and if Radeon 7750 oc will work on dat
http://www.atxpowersupplies.com/200-watt-power-supply-FSP200-60SPV-D.php
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