P55 Overclocking Showdown - ASUS, Gigabyte, and EVGA at the OC Corral (Page 6 Updated)
by Rajinder Gill on November 6, 2009 12:00 PM EST- Posted in
- Motherboards
Max CPU BCLK and MHz
We used a 750 CPU for this part of the test, comparing maximum attainable BCLK using a 17x multiplier, maximum overall CPU clock validation using the same multiplier and finally the maximum Super Pi 1M pass frequency. The reason for using an i750, well, our two 870s did not survive due to the socket burn problem and before we torture our replacement processors we would like some assurances it will not happen again. As such, i750 results for the ASUS board are missing until we receive a replacement board.
Note that using a lower CPU multiplier of 17X the Gigabyte board manages to beat the EVGA boards by 2 BCLK for outright CPU-Z validation and the EVGA P55 FTW by around 8 BCLK for Super PI 1M. At 21X however, that initial promise of higher ‘validation stable’ frequencies does not translate into higher overall overclocks even in light load benchmarks like Super Pi 1M.
Although we managed to get a 1M to pass at 233x21 on the Gigabyte board, every time we tried to open CPU-Z to capture a screenshot, the system would crash. In the end we had to step down to 229X21 at 9-9-9-24 memory timings in order to get a screenshot with all relevant CPU tabs shown. This left us scratching our heads because at higher BCLKs using the lower CPU multipliers, the Gigabyte board showed better overall stability for validation and Super Pi 1M when pushed over 245 BCLK than the EVGA P55 FTW.
The EVGA E659 was a disappointment in this section of our testing too. Our maximum Super Pi 1M came in at 21X228 BCLK, while max validation stopped at 231 BCLK, trailing both the cheaper EVGA 657 and Gigabyte P55 UD6. This leaves the E659 as a board capable of lower stable memory speeds than the other boards in our testing with its one strength being 8-thread non-memory intensive system loads like WPrime 1024M.
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Rajinder Gill - Saturday, November 7, 2009 - link
For max BCLK testingPCI/e speeds were increased (where required) to 115MHz or so (the highest the CPU's I had could run were between 115-118MHz). I tried changes to RTL, memory dividers and all voltages were also changed. Subtiming ranges were shifted out to near maximums to see if that helped and also matched between the best and worst boards in the tests just to make sure something was not creating a hurdle.regards
Raja
dingetje - Friday, November 6, 2009 - link
wow the p55 platform is totally screwd if this problem persists...any overclocker still oc'ing the hell out of their p55 must be either brave, rich or (michael jackson voice on:) ignoraaaantdingetje - Friday, November 6, 2009 - link
oops, this was supposed to be a comment, not a reply...damn UI :Pdingetje - Friday, November 6, 2009 - link
now if we could only edit our posts I would so happypetergab - Friday, November 6, 2009 - link
What about any MSI boards? I know they may not count to the "extreme" OC but I think they should have a representative in such reviews.Rajinder Gill - Friday, November 6, 2009 - link
The MSI board was due to be included but left out becasue of CPU damage that occurred during the socket burnouts. This left no real way of cross comparing the prior results with the MSI boards abilities on the same CPU. At that point I decided to run with what I had at the time rather than starting afresh thus delaying the article even further.regards
Raja
spiderbutt - Friday, November 6, 2009 - link
Are you planning to include the MSI boards at a later date? I am curious to see how they compare to the other boards.Thanks for your hard work Raja it is appreciated!
Rajinder Gill - Friday, November 6, 2009 - link
Hi,There will be some MSI P55 board reviews coming, although those were planned in more typical usage scenarios. I guess what I can do is use a different CPU in the E657 EVGA board for cross compare to any high-end P55 MSI offering we review to see how things stack up.
regards
Raja
1stguess - Friday, November 6, 2009 - link
Wow. This is a bold article. Does anyone dare OC their P55 setup? Madness.jav6454 - Friday, November 6, 2009 - link
I've been looking at these P55 boards and somehow I always thought high of the EVGA. However these results have proven my gut feeling right.Bad thing of the EVGA boards is sometimes their higher price tag.