Gigabyte P55-UD3R + i5-660 boot issue

[hicookie]

I Have the same problem... I have a Gigabyte P55-UD5 + Core i5 661 and the OC is very bad.

I got 150 BCLK rock solid with stock QPI/VTT, vcore below defaut (1.165 vs 1.175), but cannot post if the BCLK is above 150 mhz.

I have the latest BIOS on Gigabyte site, F6

Exists any beta BIOS?

just made it half hour ago,

P55-UD5 Clarkdale OC BIOS (F7b)
http://rapidshare.com/files/337233062/p55ud5.f7b.html

[destr0yer]

Still testing, but, the "uncore" option is missing.

[hicookie]

Still testing, but, the "uncore" option is missing.

uncore is fused by intel right now, so we didn't open it
also due to MCP（Multi-Chip Package）of clarkdale, which path to CPU
and IGP die is QPI bus. uncore only affects cache.

[destr0yer]

uncore is fused by intel right now, so we didn't open it
also due to MCP（Multi-Chip Package）of clarkdale, which path to CPU
and IGP die is QPI bus. uncore only affects cache.

QPI link now affects the bandwidth overall.

The new bios unlock all values of QPI multiplier and got better OC, thanks!

Some fast tests on i5 661 @ 167 bclk, 4330 mhz, ram @ 1670 7-8-7-16-1T on everest:

QPI @ 8.0 (x48)
read: 11825
write: 9327
copy: 11292
latency 64,2 ns
QPI @ 4.0 (x24)
read: 6875
write: 6141
copy: 7377
latency: 81,7 ns

[Yolanda]

just made it half hour ago,

P55-UD5 Clarkdale OC BIOS (F7b)
http://rapidshare.com/files/337233062/p55ud5.f7b.html

Hi, on P55-UD3R with 2*1GB RAM upto 210 FSB working, but with 4*1GB 192 FSB is maxx, even 193FSB can't load BIOS, just restarts with 133 default FSB. But using software OCking upto 200FSB is possible with 4 ram slots. So maybe new bios fixes can be done or some settings in existing bios i missed, hm.

[hicookie]

Hi, on P55-UD3R with 2*1GB RAM upto 210 FSB working, but with 4*1GB 192 FSB is maxx, even 193FSB can't load BIOS, just restarts with 133 default FSB. But using software OCking upto 200FSB is possible with 4 ram slots. So maybe new bios fixes can be done or some settings in existing bios i missed, hm.

Try use 2T time for high Bclk, due to Clarkdale IMC limitation
My retail 530 is good 240BCLK and 1920MHz CL9 8GB with $20 air cooling