AMD vs Intel Power Consumption

Message boards : Number crunching : AMD vs Intel Power Consumption

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Mateusz Bieniek

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Message 78418 - Posted: 7 Jul 2015, 17:04:16 UTC

Hey,

I am thinking of putting together a new computer. Money wise it looks like AMD might be a better choice (according to cpubenchmark.net). However, AMD power consumption seems to be much higher.

Since I am planning to be running BOINC in the background, I wonder if it is possible that the money I save initially, will be lost later on the electricity bills.

Any advice?
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Profile dcdc

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Message 78419 - Posted: 7 Jul 2015, 17:36:15 UTC - in response to Message 78418.  

Hey,

I am thinking of putting together a new computer. Money wise it looks like AMD might be a better choice (according to cpubenchmark.net). However, AMD power consumption seems to be much higher.

Since I am planning to be running BOINC in the background, I wonder if it is possible that the money I save initially, will be lost later on the electricity bills.

Any advice?


Hi

Yes, you're right. On a work-per-watt basis, Intel are way ahead at the moment, although AMD's Carrizo might help close the gap somewhat, I don't think anyone expects it to catch the existing Intel CPUs (although this is ignoring AMD's superior GPU capabilities).

If you are looking at a high-end system for gaming then you might be best off waiting for Intel's Skylake - the Core-i5-6600K or Core-i5-6600 which should be released at the start of August, and hopefully some of the cheaper variants too.

If you want something cheaper for office use then I highly recommend the Pentium G3250 (£45 in the UK). It's based on Haswell and is effectively half of an i5 (so two cores), but it is unlocked so I'm running mine at 4GHz with the standard heatsink and it's still very quiet and performs similarly on Rosetta to my two quad-core Q6600 (which are quite old now!).

D
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Mateusz Bieniek

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Message 78422 - Posted: 8 Jul 2015, 10:37:00 UTC - in response to Message 78419.  

Hey,

I am thinking of putting together a new computer. Money wise it looks like AMD might be a better choice (according to cpubenchmark.net). However, AMD power consumption seems to be much higher.

Since I am planning to be running BOINC in the background, I wonder if it is possible that the money I save initially, will be lost later on the electricity bills.

Any advice?


Hi

Yes, you're right. On a work-per-watt basis, Intel are way ahead at the moment, although AMD's Carrizo might help close the gap somewhat, I don't think anyone expects it to catch the existing Intel CPUs (although this is ignoring AMD's superior GPU capabilities).

If you are looking at a high-end system for gaming then you might be best off waiting for Intel's Skylake - the Core-i5-6600K or Core-i5-6600 which should be released at the start of August, and hopefully some of the cheaper variants too.

If you want something cheaper for office use then I highly recommend the Pentium G3250 (£45 in the UK). It's based on Haswell and is effectively half of an i5 (so two cores), but it is unlocked so I'm running mine at 4GHz with the standard heatsink and it's still very quiet and performs similarly on Rosetta to my two quad-core Q6600 (which are quite old now!).

D



Thanks for that. It only makes me realise how little I know. The G3250 looks great, although I was hoping to get a quad CPU.

I haven't yet decided on the budget. The rapidly falling prices constantly push me to think that it's better to wait and work on my current pc.
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Message 78423 - Posted: 8 Jul 2015, 22:29:54 UTC
Last modified: 8 Jul 2015, 22:30:29 UTC

I think skylake is worth waiting for as it's so near, and there's not likely to be anything better arriving for quite a while after because AMD's Zen chips aren't due until some time in 2016 and Intel are apparently struggling with the next generation (which would normally be a shrink to 10nm but my understanding is that that is likely to be delayed).

If your budget will stretch to a cheap skylake based quad core then I'd recommend that, and if you can't, you might be able to pick up a sandy or ivy bridge quad core cheap 2nd hand although the top end chips tend to be over priced on ebay.

You may already be fully aware, but in case not, one of the most important things is the PSU fit stability and efficiency. For some reason most PSUs are massively overpowered for systems with an integrated GPU. I'd recommend something by seasonic if possible although fsp, corsair and antec do some good ones. The antec earthwatts was always good value bit I don't know if it's still available.
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Mateusz Bieniek

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Message 78427 - Posted: 10 Jul 2015, 12:24:59 UTC - in response to Message 78423.  
Last modified: 10 Jul 2015, 12:25:18 UTC

I think skylake is worth waiting for as it's so near, and there's not likely to be anything better arriving for quite a while after because AMD's Zen chips aren't due until some time in 2016 and Intel are apparently struggling with the next generation (which would normally be a shrink to 10nm but my understanding is that that is likely to be delayed).

If your budget will stretch to a cheap skylake based quad core then I'd recommend that, and if you can't, you might be able to pick up a sandy or ivy bridge quad core cheap 2nd hand although the top end chips tend to be over priced on ebay.

You may already be fully aware, but in case not, one of the most important things is the PSU fit stability and efficiency. For some reason most PSUs are massively overpowered for systems with an integrated GPU. I'd recommend something by seasonic if possible although fsp, corsair and antec do some good ones. The antec earthwatts was always good value bit I don't know if it's still available.



I see, I'll definitely follow up the skylake. Yet I sympathize with AMD so the Zen cpus sounds like something I might consider, even if it means waiting longer.

Big thanks for the extra hints.
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sgaboinc

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Message 78428 - Posted: 10 Jul 2015, 15:41:21 UTC
Last modified: 10 Jul 2015, 15:44:56 UTC

i'd guess skylake would possibly be the most power efficient (vs haswell) running rosetta even if it may not be at those same frequencies as haswell.

http://wccftech.com/intel-skylake-s-core-i7-6700-k-benchmarks/
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Message boards : Number crunching : AMD vs Intel Power Consumption



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