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 2014-04-26, 19:57 #1 Mini-Geek Account Deleted     "Tim Sorbera" Aug 2006 San Antonio, TX USA 10000101010112 Posts Haswell Rig Haswell i5-4670K 3.4GHz CPU CORSAIR H80i for cooling 2x8GB DDR3 2400 G.SKILL Trident X Series memory ASRock Z87 Extreme4 motherboard I'm looking to upgrade my i5-750 rig, primarily due to all of the higher speeds (and new instructions) I can get from a Haswell CPU. I'll be using the CPU for Prime95/LLR crunching, primarily. Maybe some ECM, QS, and NFS sieving and post-processing, too. I'll overclock it, but not more than I feel is completely stable (4.0-4.2GHz, maybe? Most overclockers seem to go ~4.4GHz, but aren't running their CPUs at 100% all the time). I also have a GTX 560 running TF (~227 GHz-days/day at peak). Here are the parts where I'd like advice:Is the memory speed too low, just right, or excessive? I currently have 2x4GB DDR3-1600 and 2x2GB DDR3-1333, but I'm thinking even the 1600 is too slow to want to use with a Haswell. Would a more expensive motherboard be better? What stats or chipset should I look for there? Is there any major Next Big Thing™ in this price range coming up in the near future that I should wait for instead of upgrading now? I've heard a bit of the 8-core Intel with DDR4, but I'm expecting that as an "Extreme" CPU with the brand-new DDR4, it'll be way outside of my target price range. Is the liquid cooling a waste of money for my purposes, or is it useful? Does anyone have benchmarks for a similar Haswell system on small FFTs, with all 4 cores used? Can I expect that it will be a similar difference to the FFTs listed here? Currently, I get about 1.16 ms per iteration at 84K FFT in CLLR 3.8.9, with all 4 cores running (with ~1.32 million iterations per number, that's 225/day theoretically, actually closer to 215-220 since I use the machine). My current PSU is 500W, and has no apparent problems powering my computer. Can I expect that this is sufficient for and compatible with the new rig? Besides the aforementioned tech, it'll power 1 SSD (new), 1 HDD (existing), and 1 DVD or Blu-ray drive (SATA to replace old IDE DVD drive). Anything stupid I'm missing?
 2014-04-26, 20:16 #2 kracker ἀβουλία     "Mr. Meeseeks" Jan 2012 California, USA 32·241 Posts Nope, looks quite good. I have the same CPU and RAM(G.Skill) and still heavily memory bottlenecked. EDIT: Also, that i5 4430 is mine, with slow dual 1600 memory. 4670k benchmark with dual 2400 Last fiddled with by kracker on 2014-04-26 at 20:22
 2014-04-26, 22:03 #3 danaj   "Dana Jacobsen" Feb 2011 Bangkok, TH 2·3·151 Posts Here are benchmarks for a 4770k 4.3GHz DDR3-2133 that may be of interest I got a H100i cooler for it --reasonably quiet and effective. It looks like the 2400 memory wouldn't be too much. I got a Seasonic S12G-450 PSU for it, and it is running just fine. I'd intended to use a SSD, but ended up using a WD Red drive I had lying around instead.
2014-04-26, 22:38   #4
chalsall
If I May

"Chris Halsall"
Sep 2002

2×4,703 Posts

Quote:
 Originally Posted by kracker I have the same CPU and RAM(G.Skill) and still heavily memory bottlenecked.
Just putting this out there...

I have found, with a great deal of experimentation, that bringing more (real) cores of a single CPU into a LL test can reduce the memory bandwidth issues and improve performance (thanks to the caches), so long as the affinity is done correctly.

I more than doubled my LL throughput by assigning a single LL to multiple (real) cores of a single CPU, thus lessening the memory bandwidth requirements. (This did, however, require I run two instances of mprime in a dual CPU environment -- mprime was unable to manage the situation appropriately itself.)

 2014-04-26, 23:20 #5 TheMawn     May 2013 East. Always East. 11·157 Posts The H80i is going to be very good for cooling. It performs similarly to a custom solution at a much lesser price (and a much lesser level of fun involved in assembly ) The H80i fans are garbage. Both of mine were obscenely loud. Buy a pair of http://www.newegg.ca/Product/Product...82E16835103061. You can even get some that light up! 2400 MHz RAM is good. It's gotten more expensive since the Hynix fire and hasn't gone back down, and a lot of skeptics think that memory will never be that cheap ever again. On the other hand, they're wrong. Still, if you need the memory now, it's worth paying an extra $50 than to wait for a few months and use some other kit in the meantime (which most people would have to pay for anyway) i5-4670k is a must. Don't get it confused with i5-4570k. The 4670k is a 4570k that's binned higher because the batch had a better performing sample. However, there isn't a 4670k so good they can bin it as something else so a 4670k has a much better chance of being a good performing chip. 2014-04-26, 23:30 #6 kracker ἀβουλία "Mr. Meeseeks" Jan 2012 California, USA 41718 Posts Quote:  Originally Posted by TheMawn The H80i is going to be very good for cooling. It performs similarly to a custom solution at a much lesser price (and a much lesser level of fun involved in assembly ) The H80i fans are garbage. Both of mine were obscenely loud. Buy a pair of http://www.newegg.ca/Product/Product...82E16835103061. You can even get some that light up! 2400 MHz RAM is good. It's gotten more expensive since the Hynix fire and hasn't gone back down, and a lot of skeptics think that memory will never be that cheap ever again. On the other hand, they're wrong. Still, if you need the memory now, it's worth paying an extra$50 than to wait for a few months and use some other kit in the meantime (which most people would have to pay for anyway) i5-4670k is a must. Don't get it confused with i5-4570k. The 4670k is a 4570k that's binned higher because the batch had a better performing sample. However, there isn't a 4670k so good they can bin it as something else so a 4670k has a much better chance of being a good performing chip.
There is no 4570k.

2014-04-27, 00:00   #7
chalsall
If I May

"Chris Halsall"
Sep 2002

2×4,703 Posts

Quote:
 Originally Posted by kracker There is no 4570k.
Perhaps it's just me, but this seems a bit like the last scene from William Shakespeare's Hamlet....

2014-04-27, 18:50   #8
TheMawn

May 2013
East. Always East.

172710 Posts

Quote:
 Originally Posted by kracker There is no 4570k.
Correct. I saw threads with people talking about it, but I guess they were equally misled.

There is a 4570, 4570S, but no 4570K.

2014-04-27, 18:52   #9
kracker
ἀβουλία

"Mr. Meeseeks"
Jan 2012
California, USA

32·241 Posts

Quote:
 Originally Posted by TheMawn i5-4670k is a must. Don't get it confused with i5-4570k. The 4670k is a 4570k that's binned higher because the batch had a better performing sample. However, there isn't a 4670k so good they can bin it as something else so a 4670k has a much better chance of being a good performing chip.
Quote:
 Originally Posted by TheMawn Correct. I saw threads with people talking about it, but I guess they were equally misled. There is a 4570, 4570S, but no 4570K.

 2014-04-27, 19:51 #10 Xyzzy     "Mike" Aug 2002 5×7×227 Posts
2014-04-28, 00:16   #11
ewmayer
2ω=0

Sep 2002
República de California

2·3·1,931 Posts

Quote:
 Originally Posted by TheMawn Correct. I saw threads with people talking about it, but I guess they were equally misled.
Misling people is frowned upon around here, but as in this case it appears to have been unintentional, we'll let it slide.

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