Thanks bambiboom. I was hoping you would reply, as I saw a lot of your suggestions while searching for similar builds. Based on your recommendation I was looking for the right used z620 on ebay, but was having trouble finding a setup at the <$300 price point. Is there one listed right now that you would recommend? It sounds like you update your system pretty regularly, do you think the 2011 platform will sustain me (with upgrades) for 3-5 years?
Ultimately my waiting to find the right build on ebay led me to start tinkering on partpicker and look at the 2011-3 platform for "future-proofing". It seems like the consensus though is that a single E5-2620 is not a great idea for my workflow, and the money could be better spent with a higher end older system or a single cpu system.
T1MK,
It's impossible to beat the cost /performance of a used workstation as the CPU's are so quickly and highly depreciated. The E5-2690's I bought for a total of $306 cost $4,100 new. To buy the an E5- 2600 v4 that is closest: 8-core and has a top turbo speed of 3.8GHz requires an E5-2667 v4 (3.2 / 3.6GHz) and that is magically- $2,050. The E5-2667 v4 Passmark CPU average is
25004 whereas the E5-2690 in my z620 score
22625, So, for the $306 spent on the two E5-2690's as compared to the $4,100 for two E5-2667 v4's equals a 10.5% advantage for an additional $3,794.
LGA2011 still has a lot of life left in it, especially if the system is modern enough to be able to use Xeon E5- v2 CPU's. The LGA2011-3 platform has advantages- X99 is a very fast chipset, but the v3 have inconvenient dore /speed specs. and v4 is a better range. In some ways the E5- v2's have the best range of choices in terms of core to clock speed and lately the prices for v2's is beginning to be reasonable. When shopping for a z620, ask in advance if the bootblock date is post 6 2013 so it can use E5 v2 and DDR3 1866.
It will be difficult to find a z620 under $400 that is suitable to upgrade, especially as the prices are highest this time of year (lowest in August). About $400 is still OK for the $1,500 budget:
System: $400
CPU: $200 (recommend Xeon E5-2690
GPU: $430 (recommend Quadro M2000)
RAM: $150 (recommend 64GB used DDR3-1600 ECC registered)
Drive 1: $220 (recommend Samsung Evo 850 500GB or Samsung 950 Pro M.2 256GB)
Drive 2: $100 (recommend WD Black or Seagate Constellation ES.3
_____________
TOTAL = $1,500
In the future add:
2nd CPU (requires riser)
Tesla GPU coprocessor: possibly C2075 or K8
M.2 primary drive
I have to say I'm not a big fan of CPU risers and if you can find a good z820, that would be worth stretching the budget a bit:
HP Z820 Workstation 6-Core Xeon E5-2667 2.9ghz/DVD NO RAM > BIN $500
Not having to buy the riser saves $150, so this is, net, less expensive than the z620 above. The E5-2667 (6-core @ 2.9 / 3.5GHz is not a bad CPU and that can be sold for $80-$100- a nice little rebate. As compared to the z620 that particular z820 is: $500 - ($150 (riser) + 90 (value E5-2667) = $260 net. It would be worth setting up the system using the single E5-2667 and if it's promising, buy another for $80-100 , and the second heatsink- $60 or so and diverting the savings into a better GPU- try for a Quadro M4000 (about $650) and then upgrade the CPU's after a year to faster 8-cores. The Passmark single- thread mark is 1579- not fantastic, but a healthy GPU does a lot.
Yes, I do upgrade fairly regularly. The z620, replacing a Del Precision T5500 (2X Xeon X5680 /48GB /Quadro K2200/ PERC H310 / Samsung 840 /WD Black 1TB) was purchased specifically to allow finishing a very large project that has three complex Sketchup models- up to 160MB and then I'm working on a project with a 6000+ part Solidworks (2014) assembly.
Used workstations are a complicated equation that requires wise and patient shopping, but the cost/ performance in a context of reliability and support is very advantageous. LGA2011 does have a very good future in my book.
Cheers,
BambiBoom
Today's upgrade: For the Z620, a Creative Sound Blaster X-Fi Titanium 7.1 sound card- $30 .