HX620 or TX750? can't decide..

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Xaim0

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Jul 11, 2004
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I'm buying a new rig very soon, but cant decide on the psu.

Here's preliminary specs:

antec p182 case
Q9450 cpu
3870x2 or 9800gtx
4 harddrives
2 dvd-rw drives
asus x48 rampage formula
5 120mm fans
auzentech prelude (maybe)
4GB (2*2GB) corsair 8500 ddr2, but I might go with 6GB (2*2GB + 2*1GB)

I plan to overclock the cpu to 3.2 GHz, but i might go as high as 3.4 GHz depending on my success. Initially, im not going to overclock the graphics card, but I might try a mild overclock later.

If i go with the 3870x2 i might buy another later to go crossfireX, but then again i probably won't because I only game at 1680*1050.

The HX620 is nice because its modular (and more silent?) and the TX750 got some extra power. It's a tough choice, they are both about the same price. One thing that concerns me is that the TX750 might be a tight fit in the p182 case, because of the fan in the lower chamber. Anyone running this particular setup, please share your experiences.

Any help to decide would be great. Thanks in advance :)

edit: just to add that I'm talking about Corsair HX620 and Corsair TX750
 
Xaim0 said:
antec p182 case
Q9450 cpu
3870x2 or 9800gtx
4 harddrives
2 dvd-rw drives
asus x48 rampage formula
5 120mm fans
auzentech prelude (maybe)
4GB (2*2GB) corsair 8500 ddr2, but I might go with 6GB (2*2GB + 2*1GB)
...
Anyone running this particular setup, please share your experiences.
Click to expand...

Nobody, except maybe a few lucky Intel and NVIDIA engineers, is running that particular setup right now. ;) The Q9450, 9800 GTX, and X48 boards in particular are not available to the public yet.

That said, with those specs either one should be just fine. I might lean towards the 750W if you're thinking of quadfire with two 3870X2's however (given the rest of your high-end specs, I could see you wanting to do that possibly).
 
Thanks for your reply! Yeah, I'm leaning towards the TX750 atm, but i really like modular psu's like the HX620..

When i said particular setup i was only referring to antec p182 + TX750. Hopefully the other (yet unreleased) parts will be available within a month. I'm itching to build :D
 
Xaim0 said:
Thanks for your reply! Yeah, I'm leaning towards the TX750 atm, but i really like modular psu's like the HX620..
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Well, you could get a Thermaltake Toughpower 750W Modular like mine. ;) Internally, it's basically the same as the TX750 (both are actually made by Channel Well Technologies, aka CWT), but the Thermaltake has a slightly older design and has multiple rails unlike the single-rail design of the TX750. The Corsair has all Japanese capacitors, but the Thermaltake has high-quality Taiwanese caps, so it's pretty much a tie there. Otherwise, they're identical AFAIK. If anybody knows any other ways they differ, I'd like to hear it.

Corsair is known for its stellar support though, though Thermaltake's may be good too; I'm not sure, as I haven't had a need to use it yet :D . Nevertheless, the Thermaltake rep here has been gone for a while now, unlike the very active Corsair reps on the board. So that's the main drawback to Thermaltake. Still, if you're okay with that, I'd certainly recommend the Thermaltake, especially if you can get a really good price on it like I did. (It was $100 after rebate when I got it.)
 
I'm definitely open to suggestions about PSUs other than corsair, but I've heard so many good things about them. Now I'm off to do some research on the Thermaltake, thanks!
 
farfromhome said:
The Corsair has all Japanese capacitors, but the Thermaltake has high-quality Taiwanese caps
Click to expand...

I don't know about you, but I'd rather drive a Japanese car than a Taiwanese car.

Same goes with electronics.
 
kent said:
I don't know about you, but I'd rather drive a Japanese car than a Taiwanese car.

Same goes with electronics.
Click to expand...

There's quite a difference between cars and electronics. A very good portion of the components in your computer are from Taiwanese companies, so if you want to stay away from Taiwanese components, you'll have a very hard time.

Anyway, somebody that's much more knowledgeable in power supplies than either of us disagrees with your assessment. The Taiwanese caps in the Thermaltake are Samxon BTW. (Whole thread here.) There is even a good quote in there which continues your car analogy:

jonnyGURU said:
If you base your decision on what caps are inside a PSU, I'm sorry... that's like deciding on a car based on the brand of oil filter the factory installs.
Click to expand...
 
Not sure if this helps, but Corsair is putting out, if it isn't already out, a modular 1000W PSU. Would be the best of boths worlds, high watt PSU with the modular goodness.

http://www.corsair.com/products/hx1000.aspx

Not sure if price is an issue though, but it would definitely take care of your power needs for a while.
 
That psu would be awesome, but yeah, it's to expensive (judging from other 1000W units). I know I'm dropping a lot of money on this rig, but i have to put a limit somewhere ;)

About the Thermaltake. I've done some reading and it looks very good. The bad side though is that it only comes with 2 pcie connectors (correct me if i'm wrong). One of the good things about TX750 is that it has 4 pcie connectors, which is needed to run dual 3870x2s.
 
Xaim0 said:
About the Thermaltake. I've done some reading and it looks very good. The bad side though is that it only comes with 2 pcie connectors (correct me if i'm wrong).
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It actually comes with 3. Two of which are modular 6-pin, and the third is a non-modular 8-pin. So you would need to use a converter to convert two 4-pin molexes into the fourth PCI-E power connector if you were to go for 3870X2 quadfire. That is indeed a disadvantage if you're planning to go that route, albeit not a fatal one.
 
Corsair hx620 would run that rig fine even with quadfire. They'll also send you a pcie cable for free if you call them.
 
The Corsair 1000W modular is listed at $260 cdn. I don't know how that compares to other 1 kW units...but if you want to make sure that your system gets good solid power, and a power supply that's future-proof in terms of power, why not invest in it if you're already putting down the sort of money you are.
 
trust me on this one - if you have the P182, you NEED modular cables
I've built several machines in this case and it is a tight fit for any PSU, modular cables are one of the best innovations ever IMO
 
EnderW said:
trust me on this one - if you have the P182, you NEED modular cables
I've built several machines in this case and it is a tight fit for any PSU, modular cables are one of the best innovations ever IMO
Click to expand...

That's what i thought. You guys seem confident my rig will run fine on the hx620, so i'll probably go with that one then. I'll skip quadfire, don't think it will yield much benefits at my resolution anyway.

Thanks to everyone for your help!
 
When I finally decide on a component for my rig, I get the next step up. It never fails.
 
kadozer said:
Corsair hx620 would run that rig fine even with quadfire. They'll also send you a pcie cable for free if you call them.
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While it might technically be able to run Quadfire, it would not be recommended and would be running far too great a percentage of the available power. The [H]'s own review of Quadfire had the system use 680W at the wall under load, or somewhere around 550W DC from the power supply. It is generally a bad idea to be running a power supply so close to its limit; Brent Justice recommends at least a 750W. Normally I'm all for not getting a big power supply for no reason, but I wouldn't cheap out on a power supply for Quadfire.

I know the OP isn't going for Quadfire anymore, but wanted to make sure that anybody else reading this thread would know that getting a 620W, even from Corsair, wouldn't be recommended for it.
 
farfromhome said:
While it might technically be able to run Quadfire, it would not be recommended and would be running far too great a percentage of the available power. The [H]'s own review of Quadfire had the system use 680W at the wall under load, or somewhere around 550W DC from the power supply. It is generally a bad idea to be running a power supply so close to its limit; Brent Justice recommends at least a 750W. Normally I'm all for not getting a big power supply for no reason, but I wouldn't cheap out on a power supply for Quadfire.

I know the OP isn't going for Quadfire anymore, but wanted to make sure that anybody else reading this thread would know that getting a 620W, even from Corsair, wouldn't be recommended for it.
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Is this corsair rep wrong? http://www.houseofhelp.com/forums/showthread.php?t=66638&highlight=3870x2
 
If it's corsair, I'd disagree w it being a bad idea. why pay for the extra 'wattage' if your system isnt drawing close to its rated capacity? Unless there is already a case study that can confirm sustained loads at rated output with the power supply in question will damage hardware

besides 5 year warranty. : ) )
 
i'd go for the tx750. always nice to have extra/future expansion when you need it, be it for more harddrives, video cards, overclocking, or any combo of the 3 :D :cool:
 
farfromhome said:
As I said, he's technically correct. Just not recommended to be running that close to a power supply's limit long-term. ;)
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"will power your system easily" sounds a little more than technically correct, but imo I would go for modular if needed over the 750 OP.
 
The Corsair 620hx is a very nice psu, and great to have if you're not running lots of power hungry components. I have this psu, but as others have said, if you're going to be expanding with the top cards in cross fire, might as well have the extra wattage to be in the safe side.You can say it's more future proof? ^^
 
kadozer said:
"will power your system easily" sounds a little more than technically correct
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If you want to play semantics: will power your system easily, speaking to the one person rather than to people in general. Perhaps Quadfire with one hard drive and a non-overclocked dual-core. ;)

matrix563 said:
i'd go for the tx750. always nice to have extra/future expansion when you need it, be it for more harddrives, video cards, overclocking, or any combo of the 3 :D :cool:
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Or go for something 750W and modular and realize that Corsair, while wonderful, isn't the only good power supply brand out there.
 
Well, i thought i had decided on the hx620, but today i stumbled upon another psu, the Cooler Master Real Power M850. Modular and powerful, yeah! :D I found a review over at anandtech and it looks like a good psu. Apparently it's only available in europe, but this is where i live, so no problem for me ;) ..I've read it's same unit as the non-modular CM Real Power Pro 850W, which is available in the US.

This psu would be more future proof then? It got a nice price too. Not that much more than the hx620, so i might aswell go for it. What do you guys think?
 
Xaim0 said:
Well, i thought i had decided on the hx620, but today i stumbled over another psu, the Cooler Master Real Power M850. Modular and powerful, yeah! :D I found a review over at anandtech and it looks like a good psu. Apparently it's only available in europe, but this is where i live, so no problem for me ;) ..I've read it's same unit as the non-modular CM Real Power Pro 850W, which is available in the US.
Click to expand...

Assuming it's similar to the 1000W version, it's made by Enhance. Not as top-notch as Seasonic or CWT builds, but still quite good and plenty of power. I looked up AnandTech's review and they didn't really go in-depth; here's jonnyGURU's review of the 1000W version. Looks good to me.
 
After doing some more research it looks like it's made by Enhance after all. The inside of the 1000W and 850W looks nearly identical and the manufacturer code on the psu confirms it, E166947 (=Enhance).

Still, i'm pretty sure it's a good psu.
 
Looking to crossfire 2 3870s, and want to use Corsair HX620 on the DFI LT X38.
2 optical drives, 3 HDDs, an X-FI soundcard, front panel temp display/fancontrol/cardreader. at most 7 120mm Fans.

Is this enough?
 
I think your rig is similar to the one I'm building in terms of power consumption. So, yes it should run fine on hx620.
 
What reason would I have to consider a single rail solution over multi-rail? what are the advantages/disadvantages?
 
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