Source of all Information :
[H] Enthusiast - Corsair HX620 620w Power Supply
Wow, I have absoultely fallen in love with this PSU, some of the great things I can think about this PSU are :
1. 5 Year Warranty.
2. Use of Industrial grade Capacitors (105 deg rather then standard 85 deg).
3. True 620W at 50 degrees C.
4. Single Rail...yes Single Rail +12V, Corsair says a max 50A on +12V but these guys managed an impressive 45A at full load (613W), thats 540W of the 620 dedicated to +12V line. which means this baby can run 2 8800GTX in SLI easily.
5. Silent Operations even at load.
6. Available locally in India at a cool price point :hap2: of 7.2k.
7. A Modular PSU.
Some snippets from the review :
The Official Specifications :
The Accessories :
^^ That makes it a single Rail PSU
[H] Enthusiast - Corsair HX620 620w Power Supply
Wow, I have absoultely fallen in love with this PSU, some of the great things I can think about this PSU are :
1. 5 Year Warranty.
2. Use of Industrial grade Capacitors (105 deg rather then standard 85 deg).
3. True 620W at 50 degrees C.
4. Single Rail...yes Single Rail +12V, Corsair says a max 50A on +12V but these guys managed an impressive 45A at full load (613W), thats 540W of the 620 dedicated to +12V line. which means this baby can run 2 8800GTX in SLI easily.
5. Silent Operations even at load.
6. Available locally in India at a cool price point :hap2: of 7.2k.
7. A Modular PSU.
Some snippets from the review :
The Official Specifications :
The Accessories :
^^ That makes it a single Rail PSU
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Test #1 is equal to approximately 25% of the rated capacity of the HX620W at 45c. This makes Test #1 equal to 168w by loading the 12v rail to 10a, the 5v rail to 4a, the 3.3v rail to 4a, the +5vsb to 2a, and the -12v to 0.5a. The results of Test #1 were very solid with no rail exhibiting any aberrations from the specifications. The HX620W showed excellent cooling as the exhaust temperature was only 2c higher than ambient while maintaining over 80% efficiency.
Test #2 is equal to approximately 50% of the rated capacity of the HX620W at 45c. This makes Test #2 equal to 319w by loading the 12v rail to 20a, the 5v rail to 8a, the 3.3v rail to 8a, the +5vsb to 2a, and the -12v to 0.5a. Test #2 gave much the same impression as test one while our load has doubled; however there was a noticeable drop in voltage on the 12v rail. Exhaust temperature was a mere 3c above ambient and again we have over 80% efficiency.
Test #3 is equal to approximately 75% of the rated capacity of the HX620W at 45c. This makes Test #3 equal to 472w by loading the 12v rail to 30a, the 5v rail to 12a, the 3.3v rail to 12a, the +5vsb to 2a, and the -12v to 0.5a. Test #3 gave much the same impression as the first two. Exhaust temperature rose a bit this time to 8c above ambient and again we have over 80% efficiency.
Test #4 is equal to approximately 100% of the rated capacity of the HX620W at 45c. This makes Test #4 equal to 613w by loading the 12v rail to 45a, the 10v rail to 6a, the 3.3v rail to 4a, the +5vsb to 2a, and the -12v to 0.5a. In our final regular test we again see very good results. Our unit showed only a 9c rise in temperature above ambient and still retained better than 80% efficiency in addition to its excellent output voltages.
At no time during 120v testing did the HX620W fail to do what it was labeled to do no matter the load or the ambient temperature of 45c. All of the drops in voltage as load increased were within specifications and reasonable given the large changes in load the unit encountered. Particularly impressive was the almost lack of exhaust temperature rise seen in this unit. Much of the credit for this phenomenal temperature control goes to the excellent efficiency the unit displayed, maintaining greater than 80% efficiency at 25%, 50%, 75%, and 100% loads. Not to be underestimated though was the contribution by both the fan controller and the 120mm fan that Corsair has selected for this unit. With 120v testing wrapped up lets see how well those design choices work once we drop that input voltage down to 100v.
The HX620W also maintained excellent DC output quality under all circumstances in addition to excellent output voltages.
Beyond all of the performance metrics it set under our standard testing the HX620W also performed capably when the unit was subjected to a full load test at 45c for 3 hours. This test is not part of the usually testing criteria and only came about out of sheer morbid curiosity of whether or not we could “kill†the unit. Yes, we will likely add these test criteria for future power supplies that show such stellar experience, but we are in no way suggesting any PSU be used at 100% load for long periods of time.
The Bottom Line
Recommending the Corsair HX620W power supply after our rigorous testing is something we are more than comfortable doing. We can say without a doubt that the warm embrace Corsair has received from the enthusiast community with the release of their first branded power supplies has been justly earned. At around $150 (after rebate), the Corsair HX620W is far from the cheapest power supply that can be purchased, but $150 surely seems to be a very cheap insurance policy when it comes to making sure your expensive high performance computer is getting high performance power.
Corsair HX620W Power Supply
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......besides...India....availability of those other PSU's...hehe