HP workstations are quite difficult to modify as to CPU cooler, unless one uses the HP-designed z420 or z820 liquid coolers, so that some users such as Brian1965 have resorted to specially designed external units. The E5-1680 v2 was used also in high end Mac Pro's.Īs far as I know, the ability of Brian1965 to overclock the E5-1680 v2 up to 4.8GHz is entirely due to the effectiveness of the special liquid cooling system for the CPU, the fast GPU's (Quadro P2000 + GTX 180 Ti), in combination with quite a lot of added voltage- 250mV or even 300+mV - I'm not sure exactly. There are a number of examples on Passmark baselines running at 4.4 and 4.6GHz. The E5-1680 v2 ($1,723 new) from the beginning was rated to overclock to 4.3GHz and had a higher maximum temperature of 85C- most Xeon E5's are rated to 72C. You wrote "he was able to overlock an E5-1680 to 4.8GHz on all cores" but how he can do this without increase TDP power limit? So glead to see such wide response, thank you!) In both examples, the OC was intended to improve the single-thread performance for large models in 3D CAD. Let us know what results you used Intel Extreme Tuning Utility to overclock a Xeon E5-1660 v2 in a z420 to all cores 4.2GHz and an E5-1680 v2 to 4.3GHz on all 8 cores in a z620. I consider that item by far the best $50 I've ever spent on computer gear!īy the way, it appears that various Xeon E5 1600 v3's- the (1650, 1660, and 1680 v3's) may be overclocked using XTU as well. If you intend to overclock, consider adding a z420 liquid cooler as the first step. Overclocking is quite addictive and the results can be rewarding, but be very careful and patient. I hope both Brian1965 and MtothaJ will comment in this thread. However, in his quest foro more speed, he eventually bought an X79 motherboard (ASUS P9 X79 WS?) so he was able to control all the OC parameters. Whereas I have had some CPU shut downs under load- very nerve-racking events!- as far as I know Brian1965 has never had instability in the current configuration even under extreme loads of animation rendering.Īnother XTU expert here- and the person from whom I and Brian1965 learned about XTU, is forum friend MtothaJ who had very good results with an E5-1650 v2. This required a significant increase in the CPU voltage, but the high perofrmnace cooling solution meant that his CPU could idle below 30C. If and extreme cooling solution is installed, as was the done by forum friend Brian1965, using a large triple fan radiator aet in a custom-designed and fabricated external enclosure and running an open loop (has a fluid reservoir), he was able to overlock an E5-1680 to 4.8GHz on all cores. With the z420 liquid cooler in place, the CPU idles at 33-35C. In XTU, I settled on 42X- the multiplier setting + 171.875mV additional voltage. The power and speed control of the liquid cooler plugged into the same connection as the air cooler and the BIOS thermal settings emianed standard. The liquid cooler worked as the z420 and z620 have fundamentally the same motherboard and use the same BIOS. In the example of the E5-1660 v2, as the base frequency on all cores was already 3.9 Ghz, the 300MHz overclock did not impose a significant increase in the heat and stress, but the E5-1680 v2 running at 3.4GHz meant that increasing the all-core clock by 900Mhz is significant, so I added a z420 liquid cooler to the z620. Those are, in fact, the only controls available to E5 Xeons. the selection of the proper additional voltage to add in proportion to the overlock. In both examples, the OC was intended to improve the single-thread performance for large models in 3D CAD.Īs XTU will not allow the turbo duration and power maximum to be unlocked so as to protect the CPU, the key considerations are: 1. I've used Intel Extreme Tuning Utility to overclock a Xeon E5-1660 v2 in a z420 to all cores 4.2GHz and an E5-1680 v2 to 4.3GHz on all 8 cores in a z620. Business PCs, Workstations and Point of Sale Systems.Printer Wireless, Networking & Internet.DesignJet, Large Format Printers & Digital Press.Printing Errors or Lights & Stuck Print Jobs.Notebook Hardware and Upgrade Questions.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |