Thanks for the help and pointing out where I can learn more. I'll investigate the i5 4690k. I'm lazy, maybe refurb units will start showing up soon.
"So how do they compare? The Sandy Bridge box would do about 414 PPSE units a day if I don't disturb it. The Haswell box would do 666 units a day, about 61% more!!!"Originally Posted by pinhodecarlos
"Some Mega data overnight... the Haswell box is doing about 29% more of them in a given time so a smaller gap than for PPSE (where it was 61%). CPU clock normalised, my Haswell is 41% faster on Mega (76% for PPSE)."
So two 2500K would be 100% faster than one. Given they can be found much cheaper two is better than one.
I'm having fun!!! I'm just not sure if it's net fun or gross fun.
http://cpuboss.com/cpus/Intel-Core-i...-Core-i5-2500K
You make a mistake, you are only considering the investment, you also need to consider the production per watt consumed. Core-i5-4690K is the king for prime search (LLR).
For me power is cheap! Also I would go with the 4770. Yea you don't need the HT but it has 8MB L3 cache vs the 6MB L3 of the 4690K. That cache should help with the larger FFT's
Also don't get misled by typical power usage. Prime95 is anything but typical. You need to be looking more at max power. Haswell has much better idle power than the previous two generations but max power hasn't changed much. The speed settings of released Intel processors has more to do with fitting the max power into a specific envelope than what the processor is capable of running at. One reason why they overclock so well. If you really want to compare system power per watt I can connect a power meter to do some measurements. Two systems will use more power than one but it is about the power per workload unit.
Last edited by guru; 02-11-2015 at 04:35 PM.
I'm having fun!!! I'm just not sure if it's net fun or gross fun.
Here is some of the benchmark data. Trying to format it in these forums is a PITA! I had to remove parts of the 12 and 24 core benchmarks so it only includes the data for max threads which is all that is really important. The Haswell is really fast at smaller FFT's but once the size starts increasing it's advantage shrinks. This is where the dual socket server CPU's with large cache and more memory channels starts to shine.
i5-4690K 6 MB cache 3.9Ghz x 4 core 25.6 GB/s memory
bandwidthi7-4770K 8MB cache 3.9 Ghz 25.6GB/s memory bandwidth CPU speed: 3255 Cores: 4 FFT 1024K 1280K 1536K 1792K 2048K 2560K 3072K 3584K 4096K 5120K 6144K 7168K 8192K 1 Core 4.1 5.436 6.788 7.978 9.13 11.65 14.085 16.743 19.169 24.32 29.306 34.888 40.191 2 Cores 2.254 3.06 3.584 4.297 4.975 6.385 7.651 9.158 10.587 13.358 15.888 19.095 21.833 3 Cores 1.586 2.206 2.728 3.325 3.97 5.076 6.125 7.349 8.495 10.694 12.846 15.381 17.458 4 Cores 1.234 1.849 2.479 3.125 3.75 4.807 5.859 6.911 8.041 10.098 12.143 14.387 16.367 i7-2700K 8MB cache 3.9 Ghz 21 GB/s memory bandwidth CPU speed: 3492.1 Cores: 4 FFT 1024K 1280K 1536K 1792K 2048K 2560K 3072K 3584K 4096K 5120K 6144K 7168K 8192K 1 Core 5.759 7.37 9.022 10.84 12.175 15.597 19.038 22.661 26.39 33.977 41.178 48.555 56.173 2 Cores 6.544 8.429 9.554 11.372 13.686 17.32 22.508 27.162 27.815 35.12 42.799 50.112 58.786 3 Cores 3.028 3.968 4.82 5.834 6.707 8.566 10.326 12.888 14.086 17.801 21.273 25.715 29.768 4 Cores 2.115 2.877 3.564 4.37 5.132 6.692 7.913 9.573 10.962 13.672 16.459 19.577 22.258 Xeon X5690 x two sockets 12 MB cache each / 24MB
cache total3.73 ghz x 12 32 GB/s memory bandwidth CPU speed: 3466.63 Cores: 12 FFT 1024K 1280K 1536K 1792K 2048K 2560K 3072K 3584K 4096K 5120K 6144K 7168K 8192K 12 Cores 2.819 2.639 3.078 3.991 4.255 5.234 6.582 8.883 8.711 10.789 13.658 21.465 20.025 E5-2697V2 x 2 sockets 30 MB cache each / 60MB
cache total3.5Ghz x 24 cores 59.7 GB/s memory
bandwidth.CPU speed: 3055.28 Cores: 24 FFT 1024K 1280K 1536K 1792K 2048K 2560K 3072K 3584K 4096K 5120K 6144K 7168K 8192K 24 Core 1.306 1.645 1.705 1.922 2.166 2.652 3.011 3.637 4.099 5.526 8.395 12.65 16.836
Last edited by guru; 02-11-2015 at 04:27 PM.
I'm having fun!!! I'm just not sure if it's net fun or gross fun.
i5-4690K
6 MB cache
1.5MB cache per core
i7-2700K
8MB cache
2MB cache per core
Xeon X5690
12 MB cache
2MB cache per core
E5-2697V2
30 MB cache
2.5MB cache per core
I'm having fun!!! I'm just not sure if it's net fun or gross fun.
In case for a domestic processor the CPU I mention is the best solution. Server is Intel Xeon E5-2697 V3.
If I had £7000 I would invest on a dual socket Intel Xeon E5-2697 V3.
Guru, forget the Xeon X5690 processors and its family, it doesn't have avx on it so they produce half or less than an E5-2697V2.
For me energy is not cheap and you need to think that common people do pay electricity.
Please do the comparison you are saying, with an energy meter read the consumption and determine the production per day.
The systems I have setup now were geared towards dnetc. Now that I am investing in SOB the systems will change. Newer systems don't have any advantage for dnetc which is why I have so many older systems. Not having good work statistics in SOB makes it a challenge to know which systems are worth running. Right now I am going off benchmark results from specific systems.
It will be very interesting getting the running power data for the newer systems on prime95. I won't bother with power ratings for the dual socket servers.
I'm having fun!!! I'm just not sure if it's net fun or gross fun.
pinhodecarlos, what is your SOB user name?
I'm having fun!!! I'm just not sure if it's net fun or gross fun.
Yea the dual socket systems are not worth the price for crunching but if you happen to have them sitting around they will put out some good numbers. I included them in the benchmarks just because I could get some data from them. I have more systems with data to release once I get some time.
I'm having fun!!! I'm just not sure if it's net fun or gross fun.
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