I hate to be a grammar Nazi but please change the title. How can something be new AND improved. It's either an entirely new product or an improved or upgraded version of its predecessor.
It's definitely a pretty big improvement, this has been discussed on some other review sites such as jonnyguru. The TX750 v2 is a good seasonic design, the old TX750 is an older cwt design that was not a great performer. This is an awesome budget psu.
So is this review suggesting that it not being a single rail as being a bad thing? Or just that it's specs are incorrect? I mean it's better this way. If it were single rail, the amperage on the +12V would be to high and OCP wouldn't be included, splitting the rails allows for this additional protection. Corsair shouldn't lie to the customer, but I understand why they would as most people still think single rail is superior. At least they're not claming it's multi-rail when the rails are actually combined.
No disadvantage, except that consumers now need to worry about balancing rails. Single-rail designs provide the huge benefit of obviating consumers of the need to worry about if they've put too much stuff on one rail instead of the other.
Nobody needs to worry about the loads. There are just as many connectors as a rail is able to provide. Even if Corsair wants to change something with the configuration the engineers take a look at it first before they sell a single product.
I think there's plenty of research that suggests that a high quality multi-rail PSU is just as good as a high quality single-rail PSU.
There are a few exceptions where a single-rail PSU is "better", but that generally refers to instances where you are running a LOT of devices that feed off the 12V rail (10's of harddrives, fancy cooling, 3x+SLI or 3x+ CrossFire, etc).
The other part, however, (truth in advertising) is very important. If' it's a single rail PSU, advertise as such. If it's really a multi-rail PSU, advertise it as such.
The smartest choice you can make is to just wait until this summer when the Corsair Professional Series Platinum debuts. Sure they cost more but well worth it over the 7year warranty period in energy savings alone!;)
Assume an average daily load of 150W (idle most of the time), and we'll even let the system run 24/7. That works out to:
Bronze: 1547 KWh per year Platinum: 1429 KWh per year
Assuming $0.10 per KWh, you would save $11.80 per year.
If you actually leave your PC on 24/7 and draw 150W or more, I suppose it could be worthwhile to upgrade to Platinum. Realistically, though, I think Bronze/Silver is more than sufficient. Just my opinion, though.
Agreed on power savings not being worth it. But if Platinum gives you a cooler running (less heat inside the case) and mostly silent (cause the fan stays off most of the time) power supply, then to some those are very compelling reasons to pay the premium.
I don't know if Platinum could give you all that much in the way of a cooler case - it would, however, give you a cooler power supply. Modern PSU design has air from the case passing through the PSU and out the back of the PC.
it doesn't matter (at least not at the differences between Platinum through 80+) whether the PSU really gets any warmer to the temps in the rest of the case, as it's all downstream of the airflow in the case, unless you reverse the fan direction to blow air into the case.
I have heard the Platinum rating would be 92% efficiency at 50%load. Also heard that it would be 90% at 20, 50 and 80% loads, so not sure which standard was decided upon. I have the Corsair AX850 Gold and the fan never spins up during idle and running office apps, even if you put a game on the Sanyo Denki fan is so quiet it must be 10 or 12db in the silent mode. Above 50% load only then does the fan speed increase to an audible level. Another great feature of both the AX750 and AX850 is that the internal heat sinks are bonded to the exterior housing, allowing the metal psu chassis to also dissipate the heat produced and allowing the fan to remain off. And going a bit further, when I mounted the AX850 in my new Corsair 650D the metal rear and side panels surrounding the PSU become warm over extended use, so the 650D chassis also acts as a heat sink, Corsair is Brilliant!;)
What was the ambient SPL at the time of the test (and could you please include it with future PSU testing)? As is, we don't have a point of reference. The room could be 25dBA ambient and the PSU is lost in the background...the room could be an anechoic chamber with 11dBA ambient, making the PSU a vacuum cleaner.
Your request will be taken into account. I can't say how much dB, but we are starting from 16 dBA when a PSU is turned off. The dB(A) measurements are an instrument to show the difference to the competitors and of course to underline the subjective results. Latter one depends on the frequency, side noises (usually at a low frequency which is why db(A) is not always the best solution here) and the guy who is testing. :)
When I write the PSU is "relatively loud" e.g. it's a subjective opionen that the PSU is audible for me. So you can be shure it's louder than other sources of noise in the room.
I've had excellent luck with Corsair powersupplies, even the lower end budget ones. I was really surprised after only knowing Corsair for memory but they make good products. Glad to see they're staying up that high standard
SMH. Guys, please learn what the hell you are talking about. There is no difference AT ALL in performance from a single rail unit and a multiple rail unit.
The only difference is how the over current protection functions. There is none of this balancing BS you speak of.
You guys call yourselves computer gurus, and meanwhile don't have a clue what you are talking about. GJGJ
I've tried two different PSUs and two graphics cards, but any combination have resulted in the PSU squealing when I use the graphics card.It's especially prudent in ATI Tool and when I have high FPS in menus or old games. So now i'm on the lookout for a psu that does not squeal when the gpu or the cpu is doing bad stuff.
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mfenn - Monday, May 16, 2011 - link
The review really seems to jump into things with no intro.JarredWalton - Monday, May 16, 2011 - link
I thought I had copied over Martin's text from the front page summary, but I apparently didn't. It's not on the first page.quiksilvr - Tuesday, May 17, 2011 - link
I hate to be a grammar Nazi but please change the title. How can something be new AND improved. It's either an entirely new product or an improved or upgraded version of its predecessor.JCheng - Tuesday, May 17, 2011 - link
It's a newly released iteration that improves upon the previous iteration.Etern205 - Wednesday, May 18, 2011 - link
It's "new" as it just came out and "improved" since this is marked as version 2.Stop nitpicking.
veri745 - Wednesday, May 18, 2011 - link
And stop ripping off George Carlin...quiksilvr - Wednesday, May 18, 2011 - link
So if a comedian points out an oxymoron it's called ripping off? I'll keep that in mind.ekstor - Thursday, May 19, 2011 - link
Technically, you're not actually pointing out a grammar issue.Mathieu Bourgie - Monday, May 16, 2011 - link
I quickly read the article, but I didn't see any mention of how well the TX750 V2 does compared to the its predecessor, the TX750?What are the pros/cons of going with the V2 compared to the original?
Otherwise, great review, thanks!
ymetushe - Monday, May 16, 2011 - link
Same here. I was really looking for some comparison to the TX750 "V1", the original one.tomoyo - Monday, May 16, 2011 - link
It's definitely a pretty big improvement, this has been discussed on some other review sites such as jonnyguru. The TX750 v2 is a good seasonic design, the old TX750 is an older cwt design that was not a great performer. This is an awesome budget psu.JarredWalton - Monday, May 16, 2011 - link
I linked in our old TX750 review for comparison; this is a much improved product.Patrick Wolf - Monday, May 16, 2011 - link
So is this review suggesting that it not being a single rail as being a bad thing? Or just that it's specs are incorrect? I mean it's better this way. If it were single rail, the amperage on the +12V would be to high and OCP wouldn't be included, splitting the rails allows for this additional protection. Corsair shouldn't lie to the customer, but I understand why they would as most people still think single rail is superior. At least they're not claming it's multi-rail when the rails are actually combined.Martin Kaffei - Tuesday, May 17, 2011 - link
Just the specs, basically there are no disadvantage for customers. Otherwise the conclusion would have been worse for Corsair. It's still a good PSU.Guspaz - Tuesday, May 17, 2011 - link
No disadvantage, except that consumers now need to worry about balancing rails. Single-rail designs provide the huge benefit of obviating consumers of the need to worry about if they've put too much stuff on one rail instead of the other.Martin Kaffei - Tuesday, May 17, 2011 - link
Nobody needs to worry about the loads. There are just as many connectors as a rail is able to provide. Even if Corsair wants to change something with the configuration the engineers take a look at it first before they sell a single product.erple2 - Tuesday, May 17, 2011 - link
I think there's plenty of research that suggests that a high quality multi-rail PSU is just as good as a high quality single-rail PSU.There are a few exceptions where a single-rail PSU is "better", but that generally refers to instances where you are running a LOT of devices that feed off the 12V rail (10's of harddrives, fancy cooling, 3x+SLI or 3x+ CrossFire, etc).
The other part, however, (truth in advertising) is very important. If' it's a single rail PSU, advertise as such. If it's really a multi-rail PSU, advertise it as such.
Erbadios - Monday, May 16, 2011 - link
That is odd...My manual states that the version 2 of TX 650, 750 and 850 comes with a 140mm fan.
My TX650 v2 does seem to have a very large fan, but i didn't open it to acually check...
So far i like it a lot, it's somewhat quiet. I wonder if the 750TX differs a lot from the 650TX, though..
MeanBruce - Monday, May 16, 2011 - link
The smartest choice you can make is to just wait until this summer when the Corsair Professional Series Platinum debuts. Sure they cost more but well worth it over the 7year warranty period in energy savings alone!;)JarredWalton - Monday, May 16, 2011 - link
Just to do the math:Bronze vs. Platinum: 85% vs. 91% (give or take)
Assume an average daily load of 150W (idle most of the time), and we'll even let the system run 24/7. That works out to:
Bronze: 1547 KWh per year
Platinum: 1429 KWh per year
Assuming $0.10 per KWh, you would save $11.80 per year.
If you actually leave your PC on 24/7 and draw 150W or more, I suppose it could be worthwhile to upgrade to Platinum. Realistically, though, I think Bronze/Silver is more than sufficient. Just my opinion, though.
Patrick Wolf - Tuesday, May 17, 2011 - link
Agreed on power savings not being worth it. But if Platinum gives you a cooler running (less heat inside the case) and mostly silent (cause the fan stays off most of the time) power supply, then to some those are very compelling reasons to pay the premium.Makaveli - Tuesday, May 17, 2011 - link
Agree Patrick,This is the same reason I chose the 750AX over this model the fan being off at low load makes the system so quiet it was worth it.
erple2 - Tuesday, May 17, 2011 - link
I don't know if Platinum could give you all that much in the way of a cooler case - it would, however, give you a cooler power supply. Modern PSU design has air from the case passing through the PSU and out the back of the PC.it doesn't matter (at least not at the differences between Platinum through 80+) whether the PSU really gets any warmer to the temps in the rest of the case, as it's all downstream of the airflow in the case, unless you reverse the fan direction to blow air into the case.
MeanBruce - Friday, May 20, 2011 - link
I have heard the Platinum rating would be 92% efficiency at 50%load. Also heard that it would be 90% at 20, 50 and 80% loads, so not sure which standard was decided upon. I have the Corsair AX850 Gold and the fan never spins up during idle and running office apps, even if you put a game on the Sanyo Denki fan is so quiet it must be 10 or 12db in the silent mode. Above 50% load only then does the fan speed increase to an audible level. Another great feature of both the AX750 and AX850 is that the internal heat sinks are bonded to the exterior housing, allowing the metal psu chassis to also dissipate the heat produced and allowing the fan to remain off. And going a bit further, when I mounted the AX850 in my new Corsair 650D the metal rear and side panels surrounding the PSU become warm over extended use, so the 650D chassis also acts as a heat sink, Corsair is Brilliant!;)casteve - Tuesday, May 17, 2011 - link
Thanks for the review, Martin.What was the ambient SPL at the time of the test (and could you please include it with future PSU testing)? As is, we don't have a point of reference. The room could be 25dBA ambient and the PSU is lost in the background...the room could be an anechoic chamber with 11dBA ambient, making the PSU a vacuum cleaner.
Martin Kaffei - Tuesday, May 17, 2011 - link
Your request will be taken into account. I can't say how much dB, but we are starting from 16 dBA when a PSU is turned off. The dB(A) measurements are an instrument to show the difference to the competitors and of course to underline the subjective results. Latter one depends on the frequency, side noises (usually at a low frequency which is why db(A) is not always the best solution here) and the guy who is testing. :)When I write the PSU is "relatively loud" e.g. it's a subjective opionen that the PSU is audible for me. So you can be shure it's louder than other sources of noise in the room.
Lithium466 - Tuesday, May 17, 2011 - link
"Corsair uses a 140mm fan from Young Lin with a ball bearing. The product number is D14BH-12 and it takes 0.70A."=> Yate loon fan, not Young lin.
Martin Kaffei - Tuesday, May 17, 2011 - link
thanksmepenete - Tuesday, May 17, 2011 - link
I've had excellent luck with Corsair powersupplies, even the lower end budget ones. I was really surprised after only knowing Corsair for memory but they make good products. Glad to see they're staying up that high standardcelestialgrave - Wednesday, May 18, 2011 - link
What ever happened to measure the exhaust heat like a couple of years ago?TheLaw5 - Saturday, May 21, 2011 - link
SMH. Guys, please learn what the hell you are talking about. There is no difference AT ALL in performance from a single rail unit and a multiple rail unit.The only difference is how the over current protection functions. There is none of this balancing BS you speak of.
You guys call yourselves computer gurus, and meanwhile don't have a clue what you are talking about. GJGJ
DarkUltra - Sunday, May 22, 2011 - link
Hi!I've tried two different PSUs and two graphics cards, but any combination have resulted in the PSU squealing when I use the graphics card.It's especially prudent in ATI Tool and when I have high FPS in menus or old games. So now i'm on the lookout for a psu that does not squeal when the gpu or the cpu is doing bad stuff.
I hear even the latest Corsair HX850W are squealing.
http://forum.corsair.com/v3/showthread.php?t=95360
Have you tested this PSU for squealing? What 3d card did you use?
I have tested with
Mist 650W rev 3.5
Mist 650W rev 4.0
xfx geforce gtx 285
evga geforce gtx 470
I read MSI once made non-squealing graphics cards, but I haven't heard anything since.
http://www.bit-tech.net/news/hardware/2009/05/29/m...