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I7 3770K vs I7 3930K for Vmware Workstation

post #1 of 5
Thread Starter 
Hello,

I have a simple question and the answer of some of the experts could clear me out with some doubts I have.

I have plenty machines all with different CPUs running Virtual Machines, AMD-FX8120, I7 860, I7 2700K, I7 3770 and I7 3610QM.

All this machines run CPU with at 3000+ Ghz, some with Overclock others not yet.

Now I want to build one more machine. Already decided that I will go with intel and not save money with AMD.

So now my only question will be between i7 3770K or I7930K. We are talking still in a difference of almost the double of the price between this CPUS.

I don't expect to have the double of the performance also, however I would invest if the extra performance its more than 30% in this scenario.

I run always SSD and 32GB on my machines, I also plan to OC to optimize the investment. I'm able to run between 20-25 Vms.

What could be better an i7 3770k OC or i7 3930K?

Can I even OC this 6 core CPUs?

Does the new chipset 2011 it will give big improvement for virtualization?

Thanks all for your opinion.
post #2 of 5
3930k would probably be a better investment with that many VMs due to quad channel, but considering I have well over 16VMs running on a 2720QM, it probably won't matter unless those VMs are doing actual work. (I have no idea what those VMs would be doing)

Yes you can overclock the 3930k, but keep in mind x79 boards are also more expensive then Z77 boards.

The 3930k has something for virtualization the 3770k doesn't: VT-d. While most people, even those who use VM's, won't use it, it's something. Since you have experience with VMs, I'll leave that up to you.

6 cores vs 4, both with hyperthreading, yes the theoretical performance would be 30-40% higher. VMs do love those cores.

However, have to wonder why, at that point, you would still be using Workstation instead of ESXi. You could squeeze out a fair amount of performance without that extra OS's overhead.



Yes I realize I'm putting the 3930k in a very positive light here, but VMs are, by nature, very highly threaded, and as such the Hex is going to out-do the quad. The only question is if it's worth all that extra money.
Edited by KyadCK - 2/25/13 at 3:07am
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post #3 of 5
Thread Starter 
Thank you for the answer.

The reason why i'm using worstation and not vsphere it's simple I need 3D functionality.

And to have 3d Accelaration on ESXI it's very complicated you need a specific GPU for that.

I tried in the past with vsphere 4 however without any sucess.

At the moment I'm using this "VT-x" mode on all my CPUS since they support and I guess i7 3770k also support.

Yes Motherboard will increase the price also not only the CPU. OC the i7 3930k could be out of my idea for now.

My CPUs run always at 100% load, and I can reach the point when I create so many Vms that starts "lagging" the machine and giving performance problems.

But like you said the threads are important for VM, and increase of number of threads available should be a good boost, more than increasing the speed of the CPU.
post #4 of 5
3930k everytime. More threads and you can have twice the memory. Also depending on how much you have you could look around for an 2nd hand SR-2 set-up with 2 6-core xeons.
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post #5 of 5
Thread Starter 
2nd hand SR-2 set-up with 2 6-core xeons.

That could be funny but not easy to find.

I want to get a good price for VM i can create. At the moment I can run 20 Vms on a setup with cheap overclocked AMD-FX8120 That costs 2-3 times less than this i7.

What makes me think if the improvement will be so much or not.
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