Monday, May 27th 2013

Cooler Master PSUs are Haswell-Ready

As with many new product launches of this scale, there has been a bit of misinformation spread regarding the recently launched line of 4th Generation Intel processors codenamed Haswell. This has been centered on PSU compatibility with these processors. We would like to clarify the situation to calm and reassure our customers and partners that they will be able to upgrade safely. A full list of Cooler Master power supplies is listed below. Please refer to these quick facts that the public should be aware of.
  • Most power supplies don't support Haswell - False
  • I need a Haswell certified power supply to build a Haswell system - False
  • Haswell only works with DC-DC Power Supplies - False
  • Haswell only works with 80+ Gold and better Power Supplies - False
  • Haswell requires a second 12V rail and doesn't work with single rail Power Supplies - False
  • On some older power supplies, Haswell consumes 5W more in idle mode - True


Among other improvements of Intel's latest Core Processors, power consumption in idle mode has been greatly reduced from around 6W to less than 1W. This might cause some older power supplies to shut the system off when the CPU enters idle mode, or prevent the system from waking up out of sleep mode. To our knowledge all mainboard vendors will disable this advanced power saving mode by default, and no customer upgrading to Haswell should experience any issues whatsoever.

Nevertheless, should customers experience problems or would like to enable the advanced power saving mode on older power supplies that might not support it, there is a simple fix. Simply add a single silent case fan to the system and connect it to the power supply. It should provide enough additional load to keep the system running in an advanced power saving mode.

The only disadvantage would be that power savings in idle mode on such a system would only amount to around 2-3W instead of ~5W.
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10 Comments on Cooler Master PSUs are Haswell-Ready

#1
Hood
Great post, but who makes up all these rumors? Probably AMD fanboys... Good to know that the upgrade to Haswell will only require a motherboard and CPU.
Posted on Reply
#2
lZKoce
Track the rumors to the first one ever- I guess it's their PR office that came up with the idea. Its kind of smart actually, you have to get mentioned in the news, so people know you exist ;). I personally find it pointless, of course their PSUs are ready.

EDIT: Thank you Erocker, very quick-spoken commentary of me- there was a genuine reason for concern. Point taken.
Posted on Reply
#4
LTUGamer
Thank you Cooler Master! You are captain obvious! We really "need" your full PSU lineup list. :mad:

We all know that there will be possibility to use these CPUs in EVERY system using fan to increase load, turn off C6 and C7 states or do something like that. We know everything without this list. But could you give us list of PSUs which supports C6 and C7 states???
Posted on Reply
#5
Jorge
Cooler Master should stick to coolers...

They must have checked with their PSU maker(s) to see if their PSUs would actually function properly with Haswell's dumbarse design. All PSUs will work with A$$well but the C6/C7 idle stages require an unusually low 12v power source configuration.

If you really want ASSwell for some reason, you can use most any current PSU as long as you disable C6/C7 states in the BIOS. For those who don't know A$$well is only ~5%-15% better in system performance compared to IB which was only ~5% better than SB. the main gains with IB and A$$well is lower power consumption which only matters for most folks in notebooks.
Posted on Reply
#6
cheesy999
by: Jorge
Cooler Master should stick to coolers...

They must have checked with their PSU maker(s) to see if their PSUs would actually function properly with Haswell's dumbarse design. All PSUs will work with A$$well but the C6/C7 idle stages require an unusually low 12v power source configuration.

If you really want ASSwell for some reason, you can use most any current PSU as long as you disable C6/C7 states in the BIOS. For those who don't know A$$well is only ~5%-15% better in system performance compared to IB which was only ~5% better than SB. the main gains with IB and A$$well is lower power consumption which only matters for most folks in notebooks.
Really big gains in graphics which is useful on prebuilts though
Posted on Reply
#7
Jstn7477
by: Jorge
Cooler Master should stick to coolers...

They must have checked with their PSU maker(s) to see if their PSUs would actually function properly with Haswell's dumbarse design. All PSUs will work with A$$well but the C6/C7 idle stages require an unusually low 12v power source configuration.

If you really want ASSwell for some reason, you can use most any current PSU as long as you disable C6/C7 states in the BIOS. For those who don't know A$$well is only ~5%-15% better in system performance compared to IB which was only ~5% better than SB. the main gains with IB and A$$well is lower power consumption which only matters for most folks in notebooks.
Lower power consumption matters to me, and a lot of people. FX-8 series chips consume almost double what my 3770K does, yet get a similar amount of distributed computing work done. If you're a dedicated distributing computing operator running 2-3 kilowatts worth of computers, saving 50-80 watts or possibly more per computer is a no-brainer especially when you are forced to use air conditioning to keep them cool enough to run. I'd rather pay the extra 50% cost upfront instead of being forced to have less machines running and less output for the same air conditioning costs.

Obviously, your average person doesn't do this, but you wouldn't want every person on the planet driving a V8 pickup truck, would you? Should everyone use 70% efficiency power supplies because they are cheaper than the 80-90% efficiency ones that "only offer 10-20% improvement?"
Posted on Reply
#8
ensabrenoir
by: Jorge
Cooler Master should stick to coolers...

They must have checked with their PSU maker(s) to see if their PSUs would actually function properly with Haswell's dumbarse design. All PSUs will work with A$$well but the C6/C7 idle stages require an unusually low 12v power source configuration.

If you really want ASSwell for some reason, you can use most any current PSU as long as you disable C6/C7 states in the BIOS. For those who don't know A$$well is only ~5%-15% better in system performance compared to IB which was only ~5% better than SB. the main gains with IB and A$$well is lower power consumption which only matters for most folks in notebooks.
....o...k..... not a fan of haswell here,,,,, (I Want a "captain obvious" too because i like Deadpool)
Posted on Reply
#9
Frick
Fishfaced Nincompoop
by: Jorge
Cooler Master should stick to coolers...

They must have checked with their PSU maker(s) to see if their PSUs would actually function properly with Haswell's dumbarse design. All PSUs will work with A$$well but the C6/C7 idle stages require an unusually low 12v power source configuration.

If you really want ASSwell for some reason, you can use most any current PSU as long as you disable C6/C7 states in the BIOS. For those who don't know A$$well is only ~5%-15% better in system performance compared to IB which was only ~5% better than SB. the main gains with IB and A$$well is lower power consumption which only matters for most folks in notebooks.
Great post, would read again. ++++
Posted on Reply
#10
jonnyGURU
by: LTUGamer
Thank you Cooler Master! You are captain obvious! We really "need" your full PSU lineup list. :mad: http://theagileproductowner.files.wordpress.com/2012/08/captain-obvious.jpg

We all know that there will be possibility to use these CPUs in EVERY system using fan to increase load, turn off C6 and C7 states or do something like that. We know everything without this list. But could you give us list of PSUs which supports C6 and C7 states???
Quoted for awesomeness.

In other news... clouds produce RAIN! Rain causes wetness. Does wetness cause death? FALSE!

You can avoid wetness by enabling your umbrella (see umbrella manufacturer for further instructions).
Posted on Reply