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.
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.
- 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
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.
10 Comments on Cooler Master PSUs are Haswell-Ready
EDIT: Thank you Erocker, very quick-spoken commentary of me- there was a genuine reason for concern. Point taken.
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???
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.
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?"
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You can avoid wetness by enabling your umbrella (see umbrella manufacturer for further instructions).