New Sandy Bridge Computer Help (Built - WOW!) - Page 8

em99010pepe · 2011-01-31, 13:36

Quote:

Originally Posted by mdettweiler

Now I'm definitely reconsidering some earlier statements I made elsewhere on the forum that a Sandy Bridge i5 < an AMD Phenom II X6 in terms of total throughput. That may be the case for GIMPS (and other large-FFT work) but not so for NPLB and the like.

I told you so...you don't believe me...lol The core i5 750@3.6GHz easily beats an overclocked X6. Paul with his overclocked X6 was making the same LLR time as my overclocked Q6600 at the same n range, the core i5@3.6 GHz is 40 % faster than the Q6600@2.8 GHz! This difference increases with n size.

frmky · 2011-01-31, 18:01

This sucks: http://techreport.com/discussions.x/20326

Flatlander · 2011-01-31, 18:15

Quote:

Originally Posted by frmky

This sucks: http://techreport.com/discussions.x/20326

Yep.

Quote:

The two 6Gbps SATA ports aren't at risk.

Phew! My HD is running from one of them and has no other drives. Maybe one more in the future.

Christenson · 2011-02-01, 04:12

There's a reason they call it the "bleeding edge"....but, for us, it is a simple fix for the aware: use the 6GB SATA ports, and forget the 3GB SATA ports, done...we are usually not disk-bound, anyway. Cache/memory bus, yes, or CPU speed, yes, but not disk...

lavalamp · 2011-02-01, 19:18

Quote:

Originally Posted by Christenson

we are usually not disk-bound, anyway. Cache/memory bus, yes, or CPU speed, yes, but not disk...

Usually, but just recently I ran out of onboard SATA ports (there were 10). After a re-arrange and the purchase of a RAID card, I'm now using 12 SATA ports out of 20 total.

Flatlander, on some boards there are sometimes additional SATA ports put there by the manufacturer which use a separate controller hooked up to a PCIe lane or two. On my board for example, there are 6 ports run from the ICH10R in the chipset, and then 4 ports run from two extra controllers.

joblack · 2011-02-11, 19:15

You should only use the two SATA6 ports (the others have the Intel Sandy bridge bug).

Christenson · 2011-02-12, 03:47

Back in the thread wondering which CPU was best, a Sandy Bridge machine was considered. Intel is clearly in full court fix mode, but suppose I wanted to duplicate my 6-core AMD machine...are there cheap, unfixed sandy bridge Mobos out there?

joblack · 2011-02-12, 15:32

Quote:

Originally Posted by Christenson

Back in the thread wondering which CPU was best, a Sandy Bridge machine was considered. Intel is clearly in full court fix mode, but suppose I wanted to duplicate my 6-core AMD machine...are there cheap, unfixed sandy bridge Mobos out there?

No, working mainboards are to be expected in March. The unfixed ones obviously didn't get cheaper.

The 6core AMD is a nice piece of work (and for the price a lot of faster in several circumstances). The advantage of e.g. the 2500K is the wide overclocking ablilty (but only with P boards (without included graphic card)). AMD boards are known to be more priceworthy than the Intel ones.

I suggest if you want to buy one now you might check out one of the AMDs cpus.

nucleon · 2011-02-13, 00:09

I have 2600k, gigabyte ud7 motherboard, corsair h70 cooler.

I can get to 4.8GHz but no higher. I've tried heaps of voltage changes - but no luck.

4.8GHz is only about 30mins prime stable :( Temp reaches 83degC.

Currently trying 4.5GHz, temperature maxes at 66degC. So far 15mins and going....

-- Craig

nucleon · 2011-02-13, 04:56

Quote:

Originally Posted by nucleon

I have 2600k, gigabyte ud7 motherboard, corsair h70 cooler.

I can get to 4.8GHz but no higher. I've tried heaps of voltage changes - but no luck.

4.8GHz is only about 30mins prime stable :( Temp reaches 83degC.

Currently trying 4.5GHz, temperature maxes at 66degC. So far 15mins and going....

@4.8GHz and 4.5GHz prime95 25.11 dies at 768k torture test consistently (about 45-50mins in), but only when run from the start with default settings. It ends in blue screen. If I run the 768k test straight off - no problems. Bizare.

@4.5GHz prime95 26.5.2 was stable for 2.5hrs then I ended the test. Temps max at 68degC.

Big difference in temps there. Going to keep it at 4.5GHz for a while. I might leave it go for 24hrs+

-- Craig

Flatlander · 2011-02-13, 18:07

I've got 4.4GHz stable, Prime95, 8 threads, 1.325 volts in BIOS.
Max. temps are 64-68C with Noctua cooler depending on ambient.
4.5GHz is reachable with more heat/noise.
I haven't tried raising BCLK yet.

(i7-2600k on Gigabyte GA-P67A-UD3. RAM @ 1600MHz.)

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
So Sandy Bridge Xeons are now launched	fivemack	Hardware	6	2012-03-14 11:27
Overclocking, Sandy Bridge-E : Don't	firejuggler	Hardware	6	2012-03-08 19:38
2 disabled cores in new Sandy Bridge-E :(	stars10250	Hardware	8	2011-11-16 13:55
Sandy Bridge CPU Usage only 50 percent	dmoran	Software	3	2011-06-14 21:21
Sandy Bridge benchmarks are out.	nucleon	Hardware	0	2011-01-04 11:41

2011-01-31, 18:01	#79
frmky Jul 2003 So Cal 2×1,061 Posts	This sucks: http://techreport.com/discussions.x/20326

2011-02-01, 04:12	#81
Christenson Dec 2010 Monticello 5·359 Posts	There's a reason they call it the "bleeding edge"....but, for us, it is a simple fix for the aware: use the 6GB SATA ports, and forget the 3GB SATA ports, done...we are usually not disk-bound, anyway. Cache/memory bus, yes, or CPU speed, yes, but not disk...

2011-02-11, 19:15	#83
joblack Oct 2008 n00bville 2³·7·13 Posts	You should only use the two SATA6 ports (the others have the Intel Sandy bridge bug).

2011-02-12, 03:47	#84
Christenson Dec 2010 Monticello 703₁₆ Posts	Back in the thread wondering which CPU was best, a Sandy Bridge machine was considered. Intel is clearly in full court fix mode, but suppose I wanted to duplicate my 6-core AMD machine...are there cheap, unfixed sandy bridge Mobos out there?

2011-02-13, 00:09	#86
nucleon Mar 2003 Melbourne 515₁₀ Posts	I have 2600k, gigabyte ud7 motherboard, corsair h70 cooler. I can get to 4.8GHz but no higher. I've tried heaps of voltage changes - but no luck. 4.8GHz is only about 30mins prime stable :( Temp reaches 83degC. Currently trying 4.5GHz, temperature maxes at 66degC. So far 15mins and going.... -- Craig

2011-02-13, 18:07	#88
Flatlander I quite division it "Chris" Feb 2005 England 2077₁₀ Posts	I've got 4.4GHz stable, Prime95, 8 threads, 1.325 volts in BIOS. Max. temps are 64-68C with Noctua cooler depending on ambient. 4.5GHz is reachable with more heat/noise. I haven't tried raising BCLK yet. (i7-2600k on Gigabyte GA-P67A-UD3. RAM @ 1600MHz.)