I've used the system for a bit, and thought a bit more about the relative efficiencies of the p-states. Some people are inclined to run their clocking program so that 800MHz is the minimum state. This is because C'n'Q/AMD endorsed this, because they have such a conservative Voltage of 0.975V at 800M...

I have some figures for the Althon II X4 (aka 645) with Asus M4A88TD-M EVO/USB3 + 8GB Kingston I've used k10stat to do the voltage, and Overdrive to do the blended tests. My motherboard is powered by an 'efficient' standard PSU, which takes 12W to power the MOBO LED. The rig takes 53W when idle, whi...

Do any of you guys have a feel for the bare minimum power an Athlon x4 or Phenom x6 can consume when undervolted down to around 0.85V ? It should be around 4-6W. The main problem I am going to have running a new multicore is the large power surges that will be coming through long 12V wires to my M2-...

Last year I popped in here, and the consensus was that you had to use Crystal to undervolt dual core Athlons, because RMClock was causing glitches. Is that still the case? ... and is this still the ultimate lower power HDMI mobo? >> GF7050+ nF630a ASRock N68PV-GS I seem to remember it being called s...

These are pulled out of the Energystar PDF http://downloads.energystar.gov/bi/qplist/monitors_prod_list.pdf However, the trick is trying to get this to meet up with any model you can buy. BenQ G2200W 34 Watts BenQ M2200HD 28 BenQ X2200W 31 BenQ M2400HD 34 BenQ G2200W 28 BenQ G2110W 23 BenQ T2200HD 3...

Thanks, guys.

It's good that Samsungs are about right. The LG 2252TQ-PF is listed at 40W "normal", although one of that series was supposed to be the most power efficient.

We are now waiting for White LED LCD monitors.

It's common to get quite good 19" LCDs which can work around 18-20W when you turn down the brightness. This Viewsonic 920b is about that, and the old 930b could go near 12W. I am having difficulty upgrading to 22", which is the current norm. (Solar power). The power specs of all monitors is vague an...

It's those little coils doing DC-DC voltage conversions next to the CPU. You could try putting some oil or varnish on them if they are not too hot. Mine aren't too hot. Then they might still squeal and your warranty might be void. So I'd use clear floor paint.. Try pressing on them with your fingers...

Esben wrote:How big can the difference really be?

I dunno, but the 4850e has just dropped in price, so it's similar to the 5000+. So I'm about to make the decision to pay $5 extra for a CPU which goes 4% slower.

There's a $40 (AUD) premium, so I'd hope there is more going for them than just an ordinary CPU stock-volted at 1.25V. (I'll get one anyway. I'm superstitious.)

I've read some speculation that they may be specially binned. That would imply that the worse chips are being put into the mainline models. Can anyone point me to an undervolted par for par measurement?

It would have to affect mainly loaded performance, not idle, wouldn't it?

i guess cpus really are just luck of the draw, my 3600+ brisbane is set to 1.0ghz @0.8V and 1.9ghz @0.975v (dual prime stable). i've never had trouble with it, i think the most i've ever left it on was maybe 3 odd weeks? It's the motherboard. When I encountered this problem I assumed motherboard. T...

here's the settings that I used: I disabled direct multi-state transitions Based on the processors specs, I chose the following P-states/voltages 1.0ghz @ 1.1v 2.0ghz @ 1.15v 2.4ghz @ 1.25v 3.0ghz @ 1.35v That's all the settings that I used, and so far it's been stable. No point?. I was recently pl...

I have a result for the M2A-VM HDMI , Brisbane 5000+, 2GB, 320 Seagate SATA, powered by M2-ATX 12V DCDC psu. Luckily, I was building this test system for my dad and his power criterion is not all that strict. The board, due to the Asus/690G ATI chipset, is a miserable undervolter when controlled thr...

Something you should consider about the Greenpower drives, is that they appear to be at best SATA2, and have an undeclared spin rate, which will decrease data speed. SATA 2.5 may be needed for a staggered startup, so that you can use a small/efficient PSU. It's rumoured that the pins on a SATA drive...

Under-volting is not a mainstream hobby and reviews focus on what you can achieve at stock settings But congratulating a manufacturer on efficiency implies that all manufacturers overvolt their chips by the same margin. They might. It might be a special law in USA somewhere that says there must be ...

how exactly does the Earthwatts take more power than a normal (non 80Plus) PSU? With the Seasonic, it's easy to demonstrate how the Ecowatts takes more than older Seasonic PSUs, because they are reviewed on this site, and the Eco is pretty ordinary. However, I believe the Antec Eartstuff is no bett...

I'm going to be running an M2-ATX directly off 12V soon (96% efficiency), but I have to wait for an inline 20A mu45 ammeter. It's difficult measuring current and voltage at the same time. I'll be trying to measure a Brisbane on an M2A-VM-HDMI I like those Greenpower WD drives. Normally when they cal...

I can believe that a picoPSU would save 10-12W over a crappy PSU, but one thing you have to watch is that these watt meters aren't all that shit hot. They will give different accuracy readings on different PSUs. I think they pick up on resonance spikes on the wave, and this varies depending on wheth...

OK, so how did you do that undervolt? Is that all software controlled, or part BIOS magic? My understanding is that there is no software "VID" control for Duos below 0.95V - 1.15V, so lower voltages have to be kludged using static BIOS configurations. The lowest software voltage is dependent on vari...

This suggests only 8w difference in power consumption, when in actuality it's much larger. This is a pretty extreme example, but some power supplies do have very steep efficiency curves at low loads.. How do we know if most of the inefficiency of the PSU is not just a wattage offset, caused by a fi...

Thanks for the Brisbane info. I presume this also holds for the 4850e etc. Why AMD have to come up with new nomenclature for each chip, it shows how far they think ahead. I only use 2 p-states. I think anything else is abstruse, and unfathomable, given the way you will never have something that cons...

Your main problem is that you are subtracting a large number from another (to derive a small number), and assuming you know the error uncertainty of both numbers. If you did Physics at school, you'd know that was a no-no. The total power estimates can be way out, and conservative; vary from chip to ...

aww, crud, the numbers in that article/forum post have changed

HD 2400 XT_______¦)¦]|' 7W-15W-19W ²
HD 2400 Pro______¦)}|' 9W-15W &
HD 3450 _________##¦)#} 18W-36W §

I can't see how the 3450 can take that much power, because it is passively cooled with a modest sink.

You should be able to get the A8N-VM CSM down a bit more by using RMclock to 1.1V. The CPU will likely run from 1GHz to 2GHz at 1.1V (or pretty close) Which Forceware drivers are you using? One of the early versions works real well, but they stuffed up the newer ones, so TV-out gets scaled to fit th...

Here's a bit of trivia for you (according to my 12V inverter, and my dodgy watt meter (similar to Killawatt) : a Seagate 320GB SATA (ST3320620AS) takes under 7W when idle. That's through a Seasonic PSU. My inverter says 0.5A @ 13V, and it adds 20%. I can fake a high result, but not a low one :) My d...

No, but at least TV-out is! :D That may seem like a good joke, but it doesn't work. TV-out is not just an adapter, it's a whole graphics to analogue interpolation and clipping scheme, whereas d-sub can be adapted to from DVI. The newer graphics cards with 2 DVI connectors supply adaptors. On my A8N...

Thanks for the link, Jaganath. It would appear that if you are going to build a HTPC based around an Intel chipset, then the best gutless choice of graphics card is HD3450 (directX 10.1) 7-10W HD2400pro (directX 10) 7-14W HD2400XT (directX 10) 7-19W The specs for the HD2400XT say it is quite fast, b...

mcoleg wrote:HDMI to DVI works perfectly; both are pretty much the same thing.

Yeah, it just seems really weird that they made this expensive board (P5E-VM) and you can run an LCD with adapter, OR a HDTV, but not both. Haven't we moved into an era where the d-sub is obsolete yet? Esp on this mobo.

I've figured out part of the puzzle. All the home theatre mobos are AM2. However, I know nothing about ATI X1250, and whether it will look OK on a TV. The GForce 6150 drivers only worked properly in one version, and by next version they had f^cked it up again. I'm disappointed that the Intel chipset...