CoolMax 750 for $59 @NE

[rarebear]

COOLMAX RM-750B 750W ATX12V SLI Ready CrossFire Ready Active PFC Power Supply - Retail

I have been reading Reviews and have not read many for Cool Max is it a good or semi quality brand????

I'm thinking its a great deal even it its just so so...

 

[theAnimal]

The BFG LS550 for $60AR is a much better PSU for the price. It is more efficient and much better quality.

 

[rarebear]

After really looking for a CoolMax reviews and checking prices I now think..

There is no deal like this by any other maker or even close to it..
It seems only thier 1000v and 1300w units are rated for SLI @ the SLI site

So I am guessing you get what you pay for
If you want a CoolMax 80+ the 380W cost the same as the 700

I looking to get a bigger PSU like 600-800w for cheap and was hoping this was the unit..


I thinking about running crossfire..
Right now I think I have enough watts to run dual 4830s but would really be pushing my luck with 4850s

Looks like to use 4850s the watts they use really take a big jump compared to 4830s and wish I did more home work before I bought the PSU I have..

I just wish BFG made a 650 or 750 for $80

 

[HOOfan 1]

If you want a good quality 650W+ unit for $80 here is your chance

Antec Earthwatts 650W for $80 with free shipping

 

[Insomniator]

Corsair 650

 

[theAnimal]

4850s don't use much more power than 4830s.

 

[rarebear]

Insomniator,

I am not to sure of the Corsair
Andandtech did a revie of the 750 and it was not good
http://www.anandtech.com/casec...us/showdoc.aspx?i=3445

Maybe why the rebate
I had Antecs before this and have been happy and think Rosewill looks to be pretty good too so far..

Thanks You All

 

[HOOfan 1]

Originally posted by: rarebear
Insomniator,

I am not to sure of the Corsair
Andandtech did a revie of the 750 and it was not good
http://www.anandtech.com/casec...us/showdoc.aspx?i=3445

Maybe why the rebate
I had Antecs before this and have been happy and think Rosewill looks to be pretty good too so far..

Thanks You All

1) Anandtech's PSU review apparently doesn't agree with HardOCP or jonnyguru.com because both of those sites recommend the TX750...
2)The Corsair TX650 IS NOT the TX750...it is made by a completely different OEM
3)Saying Rosewill looks good and Cosair looks bad is just laughable.

There are a few Rosewills that are decent, but not are of the quality of the Corsairs..or the Antec Earthwatts.

 

[Flipped Gazelle]

Originally posted by: HOOfan 1

Originally posted by: rarebear
Insomniator,

I am not to sure of the Corsair
Andandtech did a revie of the 750 and it was not good
http://www.anandtech.com/casec...us/showdoc.aspx?i=3445

Maybe why the rebate
I had Antecs before this and have been happy and think Rosewill looks to be pretty good too so far..

Thanks You All

1) Anandtech's PSU review apparently doesn't agree with HardOCP or jonnyguru.com because both of those sites recommend the TX750...
2)The Corsair TX650 IS NOT the TX750...it is made by a completely different OEM
3)Saying Rosewill looks good and Cosair looks bad is just laughable.

There are a few Rosewills that are decent, but not are of the quality of the Corsairs..or the Antec Earthwatts.

JonnyGuru has reviewed 3 Rosewill PSUs - RP500, RX750/850, and found them much better than decent. I guess Rosewill has used so many oems that it can be hard to tell which are the good ones.

I've used at least 20 Rosewill PSU's over the years, and all of them are still in service, AFAIK. The majority were in low-end systems, though, so low-stress. An RP550 and 2 RX750's are powering gaming systems (SLI) flawlessly for over a year.

AT never actually said that the Corsair TX750 was bad, they just thought there were other PSU's that were better.

Over the years, I've had 2 Antecs die, out of maybe 6 or 7 used. My g/f's Antec Earthwatts 500w can't even power a Phenom 125w, while my OCZ 500w can. HOOfan1 has suggested to me that this particular Antec is an under-performing unit.

The one Coolmax 500w I used a few years ago blew, and took the mobo and CPU with it.

What does all this prove? Nothing.

Buy.com has the BFG LS-550 for $68, free shipping, no MIR.

 

[HOOfan 1]

Originally posted by: Flipped Gazelle

JonnyGuru has reviewed 3 Rosewill PSUs - RP500, RX750/850, and found them much better than decent. I guess Rosewill has used so many oems that it can be hard to tell which are the good ones.
.

All of them good for their price. All of them are group regulated though. The TX750 does have the flaw of high ripple, but its voltage regulation is better than the Rosewill RX750.

Paul Johnson tested the RP500-2 in a roundup of 4 PSUs and declared it the worst one of the bunch. One reason was that it failed the Transient load test, which jonnyguru.com was not doing at the time they reviewed the RP500-2

I wasn't saying Rosewills are all bad, but rarebare was saying he thinks Rosewill shows more promise than Corsair...I find that laughable. None of the Corsair units are pieces of junk...there are plenty of Rosewills that are though.

As for your girlfriend's Antec, perhaps her unit is faulty, until you at least try another Earthwatts unit, it is rather presumptuous to claim the whole line is crap....especially when all the sites who doo 100% load test on them give them glowing reviews.

Even the Antec Signature or PC P&C Turbo-Cool line (two of the best consumer PSUs available) have some units that fail.

There certainly have been poor performing Antecs in the past though....Truepower 2.0 Smartpower...those had junkcapacitors.

In the end I am going on and on and possibly unfairly running down Rosewill to say that doubting the Corsair TX650 based on the Anandtech review of the TX750 is silly.

 

[Flipped Gazelle]

I guess my overall point (if I had one) was that many brands have winners and losers.

Rosewill, IMO, is a name that is attached to some very good products from a value perspective. What happens is that there are so many bad "Rosewill" products that many enthusiasts don't even consider them. I'm sure the reason that Rosewill PSU's have worked so well for me is that they are in PC's that draw less than 150w from the wall. The "good" Rosewill's are in the more demanding systems.

I've used some Tagan and FSP units over the years and have been happy with them.

I never said that the whole line of Antec Earthwatts was crap - in fact, I noted that you had said previously that the particular unit in question was probably an underperfomer. And now that you mention it, I think it was a couple of Truepower units that crapped out on me.

I have an old Deer 200w (IIRC) powering a 566mhz Celeron system... that thing's so ancient, it seems. The Celly gets lent out on occasion while I'm working on someone's PC.

 

[HOOfan 1]

Now see Deer those are pretty much all crap without exception. If you tried pulling the claimed wattage from that unit I bet it would have blown.

My point wasn't to run down Rosewill though, it was to say that rarebare's concerns about the Corsair TX650 are unfounded.

Obviously I chose a poor choice to make that point by making fun of Rosewill because a few of their units truly are decent.

 

[Insomniator]

I'll say it here instead of continuing to the topic where I was called a troll in hot deals.

I don't care if it was just a bad batch of PSU's from rosewill, even though it looks like people had problems with sparks and fire for about 6 months.. maybe a few batches. Why would I or anyone buy a mid range 80 dollar PSU from them again when you can get a similar wattage corsair or antec for almost the same price? Its not like we are buying curtains here; there should be 0 risk of freakin sparks. Most of better known brands have hundreds of reviews with a few doa units or ones that went bad after a few months but there were no bad batches of dangerous PSU's. This is like people continuing to buy pintos because they are good values despite the fact that they might blow up in a fender bender.

I'm sure its a lot easier to make a crappy PSU that will power 100 watts just fine, but if you need a 600W+ PSU then the rest of you system probably costs some money. Spend the extra 50 bucks (or in this case, 10) and get a decent unit.

Just my opinion of course.

 

[Flipped Gazelle]

Originally posted by: Insomniator
I'll say it here instead of continuing to the topic where I was called a troll in hot deals.

I don't care if it was just a bad batch of PSU's from rosewill, even though it looks like people had problems with sparks and fire for about 6 months.. maybe a few batches. Why would I or anyone buy a mid range 80 dollar PSU from them again when you can get a similar wattage corsair or antec for almost the same price? Its not like we are buying curtains here; there should be 0 risk of freakin sparks. Most of better known brands have hundreds of reviews with a few doa units or ones that went bad after a few months but there were no bad batches of dangerous PSU's. This is like people continuing to buy pintos because they are good values despite the fact that they might blow up in a fender bender.

I'm sure its a lot easier to make a crappy PSU that will power 100 watts just fine, but if you need a 600W+ PSU then the rest of you system probably costs some money. Spend the extra 50 bucks (or in this case, 10) and get a decent unit.

Just my opinion of course.

Definition of "troll" from Urban Dictionary:

. troll One who posts a deliberately provocative message to a newsgroup or message board with the intention of causing maximum disruption and argument

Your post in HD matched that definition, IMO.

If you had put the coherent, well thought out, logical paragraph you posted here in that HD thread, then I wouldn't have accused you of trolling.

Or maybe it's just that I'm short-tempered these days, as I'm really tired of the insipid AMD/Intel and ATI/Nvidia crap that goes on.

PS - If you were just attempting to be funny, and I didn't get it, then I apologize for calling you a "troll".

 

[HOOfan 1]

Originally posted by: Flipped Gazelle
I'm really tired of the insipid ATI/Nvidia crap that goes on.

I can certainly agree with that....the Video Card board is hardly worth reading anymore.

 

[rarebear]

My ISP has been down so this is a late reply..


HOO Fan1,

I did not say the Coarsair unit was Bad!

Andandtech did..................................

Compared to other Corsair offerings, the TX750W is simply not up to snuff.

You can take that how ever you want to but IMHO its not a good review...................


I also did NOT say that Rosewill is better than Corsair.....
I said "Rosewill looks to be pretty good too so far"..

Before you make statements about what people said please make sure your have your facts correct...


All in all I am considering buy a Corsair TX850w @$120 with rebate it looks pretty good but I need to read more about line noise as see how bad that really is. and if I should spend an extra $50 to get a better quality PSU or not.......

I read that CWT makes Corsair as well as XIGMATEK and Thermaltake

 

[HOOfan 1]

Ok so...Katzer said compared to other Corsair units the TX750 wasn't up to snuff. Meaning that he thinks other Corsair units are better....so what makes you doubt the Corsair TX650 because of that review.

In the end, if you want a 650W plus unit for $80, you aren't exactly going to be buying something that is a top notch performer in every single category (efficiency, Voltage regulation, ripple suppression).

The Earthwatts 650W I linked you to for $80 is pretty much as close as you can get to a top notch performer at that price. If you don't mind rebates (which I do) then the Corsair TX650 at $70 after rebate is another one that is as close to top notch as you will get for that price.

I would just like to suggest that you branch out beyond Anandtech for your PSU reviews.

I suggest
Jonnyguru.com
HardOCP.com
HardwareSecrets.com
PCper.com

I am not trying to incite you rarebear, I am just giving my opinion. I apologize if my remarks were harsh or if you take umbrage with my tone.

As for who makes Corsair
VX450, HX450, CX400, TX650 and HX620 are all made by Seasonic
TX550, TX750, TX850 and HX1000 are all made by CWT.
TX550, TX750 and TX850 are the PSH platform
HX1000 is PUC platform

 

[Flipped Gazelle]

Originally posted by: HOOfan 1
As for who makes Corsair
VX450, HX450, CX400, TX650 and HX620 are all made by Seasonic
TX550, TX750, TX850 and HX1000 are all made by CWT.
TX550, TX750 and TX850 are the PSH platform
HX1000 is PUC platform

How do you know who makes what PSU? Is there an online resource for this, or do you know by opening one up and looking at the layout, parts used, etc?

 

[HOOfan 1]

Originally posted by: Flipped Gazelle

Originally posted by: HOOfan 1
As for who makes Corsair
VX450, HX450, CX400, TX650 and HX620 are all made by Seasonic
TX550, TX750, TX850 and HX1000 are all made by CWT.
TX550, TX750 and TX850 are the PSH platform
HX1000 is PUC platform

How do you know who makes what PSU? Is there an online resource for this, or do you know by opening one up and looking at the layout, parts used, etc?

I read a lot of Power Supply reviews.
The really good reviewers tell you exactly who makes them, and they can tell by several methods.
1) The UL number (although this isn't always possible as sometimes the seller and not the manufacturer have their own UL number on it and sometimes the wrong UL number is attributed to a unit)
2)Recognizing the internal layout of the power supply
3)Sometimes the OEM is silkscreene onto the PCB or there is an identifier on the main transformer. Such as TOP for Topower or CWT for CWT.

Also Corsair reps like Redbeard and Yellowbeard are pretty darn forthcoming with information. They have actually confirmed who the OEMs are and they actually admitted the HX520 and HX620 are single 12V rail as opposed to what the labels state.

I am far from an electrical engineer so I am only half-assed at determining the OEM by just looking at the internals of a PSU. I can recognize the big guys like Seasonic, Enhance, Topower and CWT most of the time, but I can't recognize some of the oddball guys.

Edit: as far as an online resource...this is a tiny bit of help, although it isn't up to date link

 

[rarebear]

Thanks for talking me threw this idea (Buying a CoolMax) that I kind of knew was to good to be true..


The sites you listed with some reading let me know there are some good deals out there..
I think Corsair is one..

I wish someone would do a review of Case Makers PSUs to see whos better

 

[HOOfan 1]

Originally posted by: rarebear

I wish someone would do a review of Case Makers PSUs to see whos better

HardOCP actually did a review of a Coolermaster Case/PSU combo from Coolermaster...of course it was a Premium Case (Stacker 830) and a Premium Power Supply (Real Power Pro 1000W) that is about a $380 combo. Antec packages some of their cases with the Earthwatts series of PSUs which are pretty good for the price.