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New gaming system 620 vs 750watt psu

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July 31, 2008 3:55:40 PM

Greetings all,

I am buying a new system and wonder which PSU would be best.

So Im considering the Corsair HX 620w Modular, or the Corsair TX 750watt.

My new system setup:

MB: Gigabyte - GA-X48-DS5
CPU: Intel Duo E8500
RAM: 4 x 2048mb OCZ Reaper pc-8500
HD: Samsung HD753LJ
Graphic: Nvidia MSI nx8800gt 512mb
Soundcard: Creative Fatality X-FI Gamer
Extra coolers, 2 x 120mm, 1 x 140mm.

Future updates to consider with choosing the PSU.

Might be changing the graphic card to 2 x ATI 4870's in crossfire.

Will the 620 be enough for both the current setup and the graphic update, or would I need to buy the 750 if I want to update to the 2 x 4870's ?

Thank you for your time :hello: 
July 31, 2008 3:58:31 PM

Dump the audio card and put that money into the GPU. The onboard audio is very good.

I have never heard anyone have problems with a PSU that has too many watts but I have talked to people who have a PSU that has to few. Go with the 750.
July 31, 2008 4:04:05 PM

+1 for mexpedip (Off topic: what does mexpedip mean?)
Info : X48 is a Xfire mobo, HD4870 or 4850 is to be used with this mobo, not nVidias.
FOr 2xHD4870 it is much safer to buy 750W PSU, get Corsair.
Related resources
July 31, 2008 4:05:12 PM

if your going to use x48 why not just change your videocard to 4870.
July 31, 2008 4:09:47 PM

I will be changing it to 4870, but it will have to wait a month maybe 2 months.

I forgot to add that currently I already have the 8800gt card (Sorry)., kinda bought it a little while ago before deciding to get a whole new system, but at the time my old GPU didnt support shaders 3.0 it was kinda holding me from games I wanted to play.
July 31, 2008 4:10:21 PM

mexpedip = first initial, last initial, part of a company name and the last part is the parent company. I was bored one day a long time ago, needed a new email address and everything I could think of was taken so this was the best I could come up with.

Good part - the name is never taken

Bad part - I forget how to spell the damn thing a lot.
July 31, 2008 6:14:16 PM

btw, is it a good time to buy HD4870's now or is there a price drop soon?
July 31, 2008 6:14:25 PM

HardwareSecrets said in their review:
Quote:
Corsair HX620W is a terrific power supply and won’t let you down. In our tests it could really deliver its labeled power at 50º C, showed a terrific voltage regulation, it was very quiet, produced a very low electrical noise level and its efficiency was of at least 83%, peaking 88%. And the best of all: we could extract up to 746 W from it. So you will be basically paying for a 620 W product and bringing home a 740 W power supply.

In conclusion, Corsair HX620W is one of the best power supplies you can find on the market, pleasing both average users and enthusiasts.


http://www.hardwaresecrets.com/article/371/10

But the largest different is that the TX750 will be much louder than the XH620, in terms of electrical noise....
July 31, 2008 6:28:53 PM

deusex said:
HardwareSecrets said in their review:
Quote:
Corsair HX620W is a terrific power supply and won’t let you down. In our tests it could really deliver its labeled power at 50º C, showed a terrific voltage regulation, it was very quiet, produced a very low electrical noise level and its efficiency was of at least 83%, peaking 88%. And the best of all: we could extract up to 746 W from it. So you will be basically paying for a 620 W product and bringing home a 740 W power supply.

In conclusion, Corsair HX620W is one of the best power supplies you can find on the market, pleasing both average users and enthusiasts.


http://www.hardwaresecrets.com/article/371/10

But the largest different is that the TX750 will be much louder than the XH620, in terms of electrical noise....


Thx for that article, At the shop im already ordering some parts theyre both about the same price, the 620 being a bit more expensive actually. But still I think its gonna be the 620.
July 31, 2008 6:38:52 PM

Welcome. The TX750 is a good PSU too, and it can exceed its 750W at peak, but I believe that the HX620 is of overall higher quality.

I also have the X-Fi Xtremegamer Fatal1ty- it's a great card if you can get it for a good deal.

ATI usually doesn't have price drops....they have already forced Nvidia to drop their pricing....

July 31, 2008 7:16:16 PM

get two 4850s and crossfire and you will be safe with the 620 for sure
July 31, 2008 7:42:44 PM

I have the corsairs 620HX running HD4850 in crossfire and Q6600 at 3.2ghz and it doesnt even hiccup. I wouldn't buy anything other than a modular power supply. Here's my specs below.

975XBX
Q6600 @ 3.2
4 gigs of DDR2 800 crucial ballastix
2-74 g raptors in raid 0
Sony dvd burner
Sony cd rom burner
Antec 900 case
HD4850's in crossfire
Audigy 2ZS
Sony 40" CLD @ 1920/1080
July 31, 2008 8:05:15 PM

Saavik said:
Greetings all,

I am buying a new system and wonder which PSU would be best.

So Im considering the Corsair HX 620w Modular, or the Corsair TX 750watt.

My new system setup:

MB: Gigabyte - GA-X48-DS5
CPU: Intel Duo E8500
RAM: 4 x 2048mb OCZ Reaper pc-8500
HD: Samsung HD753LJ
Graphic: Nvidia MSI nx8800gt 512mb
Soundcard: Creative Fatality X-FI Gamer
Extra coolers, 2 x 120mm, 1 x 140mm.

Future updates to consider with choosing the PSU.

Might be changing the graphic card to 2 x ATI 4870's in crossfire.

Will the 620 be enough for both the current setup and the graphic update, or would I need to buy the 750 if I want to update to the 2 x 4870's ?

Thank you for your time :hello: 

Those are both awesome power supplies and they will both power your rig. I recommend the TX750 because:

A) It's cheaper and more powerful (duh)
B) Although the HX620 might be ever so slightly better in terms of electrical noise, the TX750 remains well within ATX standards even at full load.
C) The TX750 has 4 PEG connectors, which will be handy for powering two 4870s without having to use molex -> PEG adapters.

No worries though, you can't go wrong with either of them :) 
!