Thats C1 stepping by the way.
On the 2670 C1:Interestingly enough post #26 talks about succesfully enabling VT-d and passing through a device on a C0 Xeon E5-2650L.
I'd be curious from any posters here who have C0 or C1 chips if they can perform some actual pass through testing and see if it DOES, in fact, function.
I've already seen that...and I'm not entirely convinced though. Also, I forgot the relevant link to my post lol, I edited it and added it.
Perhaps he can passthrough the controller but gets garbage speeds? More thorough testing is needed.The initial batch of C1 revision Sandy Bridge-E processors have a bug – “errata” in Intel terminology – in them with VT-d, which means that hardware accelerated virtualization doesn’t work properly with them (software only mode is unaffected). The feature when working properly, allows all hardware acceleration to work on the hosted operating system (virtual machine).
Mine should be here today or tomorrow. I will toss them in and install esxi and test. I have a M1015 and a 2 port nic in the box I can try to pass through and test speeds.I've already seen that...and I'm not entirely convinced though. Also, I forgot the relevant link to my post lol, I edited it and added it.
The description of the issue on a techpowerup article is:
Perhaps he can passthrough the controller but gets garbage speeds? More thorough testing is needed.
The x5650 and e5 do not use the same socket. But no you don't need it for a workstation at all. Vtd passed physical hardware through to VMs.At this price I should get one of these for my desktop to replace my x5650 setup. Do I need to have VT-d enabled for workstation? If not a C1 stepping would work.
I'm thinking of grabbing one and maybe a barebones Dell T3600/5600 workstation for my wife. With the spare drives, ram and video cards I have around it could be a pretty stout PC for around $500At this price I should get one of these for my desktop to replace my x5650 setup. Do I need to have VT-d enabled for workstation? If not a C1 stepping would work.
Starting a thread to keep track of pricing of the Intel Xeon E5-2670 V1. They were around $300 a month ago.
Here is a link to the ebay lowest price search.
12 October 2015 - $199.99
15 October 2015 - $179.99
23 October 2015 - $175.00
Amazing the speed at which these are falling. Making a prediction they will be sub $150 soon.
Do you get full capability out of high-end video cards using them on server motherboards?I'm thinking of grabbing one and maybe a barebones Dell T3600/5600 workstation for my wife. With the spare drives, ram and video cards I have around it could be a pretty stout PC for around $500
The T3600 (single 2011), T5600/7600 (dual 2011) are workstations designed for high performance cards. The HP Z420/620/820 are good too.Do you get full capability out of high-end video cards using them on server motherboards?
I believe you need Vt-d to dedicate a HD for direct access to a VM in Hyper-V.What are you guys passing through that you need VT-D? HBA controllers for FreeNAS?
There's no reason you wouldn't unless you're fully saturating the expansion slots with high bandwidth devices. Even then, benchmarks show there's little difference(if any)in performance between protocols like PCIe 2.0/3.0 and x8 and x16 electrical for GPUs, at least in gaming anyway. Now that you mention it I'm not sure if rendering or workstation video cards are a different beast in that regard, my intuition tells me probably not, though. The only time I'd worry about it is if you're forced to run a card in 4x mode, then you might not be getting the "full" capability.Do you get full capability out of high-end video cards using them on server motherboards?
hop on IRC!What are you guys passing through that you need VT-D? HBA controllers for FreeNAS?
No you won't.The spec sheet on the T5600 says "Support for two PCI Express® x16 Gen 2 or Gen 3 graphics cards up to 300W (total for graphics)" then recommends a bunch of Quadro/Firepro cards.
I have a Geforce GTX 780TI, will I lose any performance running something like that motherboard(for gaming)? Or should I go out and grab an ASUS rampage motherboard(which is non-server obv)?
I've already seen that...and I'm not entirely convinced though.
I tested an HGST TravelStar z7k500 attached to the HBA. Not a thorough test by any means, but a quick Atto test yields expected "direct access" results ..Perhaps he can passthrough the controller but gets garbage speeds? More thorough testing is needed.