[TH] Exclusive: 'Nehalem' at 2.9GHz and X58 - Page 5 - Overclock.net

jrharvey · 07-07-08

A Q6600 @ 3.2 gets 16 seconds on a 1M SuperPI bench while the Nehalem gets 8 seconds @ 2.66ghz. This is going to be a HUGE jump for cpu gurus. I dont know how they keep doing this. I have to wonder, when will they hit their limit. 45nm is sooooo small as it is. I think the silicon atom is only .5nm.

Blameless · 07-07-08

Quote:

Originally Posted by sccr64472

I think you meant Northbridge.

Northbridge usually implies the chip that contains the memory controler. As Nehalem has an integrated memory controler, it can be said to have an integrated northbidge as well.

Wether X58 is deserving of the title of northbridge is debatable. It's essentially just a QPI-to-PCI-E bridge chip.

Quote:

Originally Posted by jrharvey

A Q6600 @ 3.2 gets 16 seconds on a 1M SuperPI bench while the Nehalem gets 8 seconds @ 2.66ghz. This is going to be a HUGE jump for cpu gurus. I dont know how they keep doing this.

Simply integrating the memory controler is responsible for most of that.

SuperPI is very latency intensive.

Darkice · 07-07-08

they will not hit a limit there is always room to improve how long it takes to improve is yet to be known but there will always be improvements....

Unless of course the war blows up and we all die...

jrharvey · 07-07-08

Quote:

Northbridge usually implies the chip that contains the memory controler. As Nehalem has an integrated memory controler, it can be said to have an integrated northbidge as well.

So does this mean that overclocking could technically be easier because you dont have to worry about cooling or tweaking the northbridge or NB voltage? I ask like anyone here would know but it is worth a shot i guess.

Quote:

Unless of course the war blows up and we all die...

I hope not.

Darkice · 07-07-08

I hope not as well haha the wording on that was pretty bad I meant
unless of course war breaks out across the world and we a blow up and die...

Blameless · 07-07-08

Quote:

Originally Posted by jrharvey

So does this mean that overclocking could technically be easier because you dont have to worry about cooling or tweaking the northbridge or NB voltage? I ask like anyone here would know but it is worth a shot i guess.

I'm certain chipset voltages and cooling will still be a factor, but it should be much less of one.

The situation should be similar to how AMD setups have worked since the introduction of the A64. QPI is roughly analogous to hyper transport

If the QPI clock can be controled, overclocking the CPU and the memory could be done without any need to increase chipset voltages, or improve it's cooling.

Comp112 · 07-07-08

If someone decides to fill all of those slots up to the MAX with the ram..DDR3 ram..Can you imagine how much that will cripple that persons wallet.....

EDIT: Yeah here is a link to just a 2x2gb kit of OCZ reaper ram.

http://www.newegg.com/Product/Produc...82E16820227293

Now of course it will get cheaper, but it will still kick you in the family jewels.

Blameless · 07-07-08

Filling up all ram slots on most any board is expensive, if the memory is a newly released type.

I remember going from 2x8MiB to 4x8MiB on my pentium 75. I had more than 600 dollars of ram in my computer!

darkcloud89 · 07-07-08

Quote:

Originally Posted by jrharvey

A Q6600 @ 3.2 gets 16 seconds on a 1M SuperPI bench while the Nehalem gets 8 seconds @ 2.66ghz. This is going to be a HUGE jump for cpu gurus. I dont know how they keep doing this. I have to wonder, when will they hit their limit. 45nm is sooooo small as it is. I think the silicon atom is only .5nm.

The 8 seconds @ 2.66GHz was faked (The checksum was invalid). It gets 13.9 seconds @ 2.9GHz:

According to the 2.4GHz Nehalem benchmark on nehalemnews.com, SuperPi is seeing a ~13% increase in per-clock performance. This makes sense since SuperPi tends to be very sensitive to memory/cache latency, more than most applications.

Quote:

Originally Posted by Blameless

The situation should be similar to how AMD setups have worked since the introduction of the A64. QPI is roughly analogous to hyper transport

Nehalem clocking is actually quite similar to AMD's now: