[XBitLabs] Sandy Bridge versus 990x/875k/1100T - stock and overclocked

Termie

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Aug 17, 2005
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Really interesting article: http://www.xbitlabs.com/articles/cpu/display/core-i7-2600k-990x.html.

While it's mostly about the SB -K processors and the 990x, they throw in a full analysis of the 875k, representing the older i7 series, as well as the Phenom II 1100T.

We all know Sandy Bridge is fast, but what's interesting to note is that in most benches, the 875k at 4.0 just barely catches up to a 2600k at stock, but uses over twice as much power. SB's efficiency is just unparalleled. Oh, and it generally beats the 990x too.

A number of people have posted questions in this forum about overclocking/voltage/temps for the 2600k recently - this article has some good info on that.
 
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aigomorla

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yeah but my oc'd 990x will spank my 2600k in any benchmarks i throw at it... both overclocked..

Not to mention the 990x platform im on probably also costs 3 time more then the 2600k platform, and thats with a high end Maximus 4 extreme board to boot.


This type of comparision is moot.
Because u dont get a 990x unless ur going to use all 6 cores / 12 threads, or ur just straight up greedy like i am.

It makes no financial sense otherwise. Not with LGA2011 coming around soon.
 

DrBoss

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Feb 23, 2011
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The 2600k's gaming performance is ridiculous
didn't expect it to outpace the 990x
 

gevorg

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Nov 3, 2004
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Nice to see 2500K/2600K spank the 990x/875k in so many benchmarks. All at a fraction of the cost.
 

toyota

Lifer
Apr 15, 2001
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2500k and 2600k are great performers for the money no matter how you look at it. and I really love the power consumption of Sandy Bridge as it makes the other cpus look silly.
 

john3850

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Oct 19, 2002
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Most 17 x58 that are oc are running 200+bclk.
Like to see how i7x58 at 4200 with 200+bclk does compered to a 2500K/2600K at 4200.
 
Mar 11, 2004
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yeah but my oc'd 990x will spank my 2600k in any benchmarks i throw at it... both overclocked..

Not to mention the 990x platform im on probably also costs 3 time more then the 2600k platform, and thats with a high end Maximus 4 extreme board to boot.


This type of comparision is moot.
Because u dont get a 990x unless ur going to use all 6 cores / 12 threads, or ur just straight up greedy like i am.

It makes no financial sense otherwise. Not with LGA2011 coming around soon.

Not sure how this is moot, as this is more aimed at highlighting how good Sandy Bridge is and how poor of an idea going 1356 will have turned out to be. Er, also, this pretty much proves you wrong as well, as in most things the 990x did not spank a 2600k, in fact, it lost most of the time.

I guess its cool that you like spending a bunch of money, but I think this might highlight a point that for most users, including many enthusiasts, megabuck enthusiast platforms are generally not worth it.

Its like Intel wanted to re-enact AMD's FX platform silliness or something with 1156/1356, only they had a Core 2 over Pentium D-esque improvement waiting in the wings such that it makes 1356 look even worse.
 

Dadofamunky

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Jan 4, 2005
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Gulftown's an awesome chip if you've got the scratch, have nowhere else to spend it, and have a compelling reason for the two additional cores. But it really basically IS obsolete. Scary thought, but it is.
 

AdamK47

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Oct 9, 1999
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Gulftown's an awesome chip if you've got the scratch, have nowhere else to spend it, and have a compelling reason for the two additional cores. But it really basically IS obsolete. Scary thought, but it is.

So Intel released the 990x knowing it's obsolete. Yeah, right. Whatever gives you warm fuzzies about your chip of choice.
 

Voo

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Feb 27, 2009
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So Intel released the 990x knowing it's obsolete. Yeah, right. Whatever gives you warm fuzzies about your chip of choice.
Well for the handful applications that really profit from 6 instead of 4 cores (i.e. encoding and.. well encoding) it's still better than the 2600k.

But for the majority the 990x was never an especially useful CPU to begin with and it's really nothing new for Intel to command an absurd price premium for their top chips.
 

Nemesis 1

Lifer
Dec 30, 2006
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yeah but my oc'd 990x will spank my 2600k in any benchmarks i throw at it... both overclocked..

Not to mention the 990x platform im on probably also costs 3 time more then the 2600k platform, and thats with a high end Maximus 4 extreme board to boot.


This type of comparision is moot.
Because u dont get a 990x unless ur going to use all 6 cores / 12 threads, or ur just straight up greedy like i am.

It makes no financial sense otherwise. Not with LGA2011 coming around soon.

Someday in a pm could U explain why you keep putting down SB 4 core. U been saying the same thing for over a year now . Most here see this is not the case. I see your point of a few apps that are highly threaded and your right. But it will be the same as= to that of people saying BD will be great in these highly threaded apps. and they will carry that theme forward . In time it will be so I am sure but Time is something AMD is running out of.
The only thing going to beat SB is a faster SB . By the time we have Alot of highly thread apps for consumer market There will be 14 intel cpus on one die
 

Dribble

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Aug 9, 2005
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imo it shows the 2600K isn't really worth it. Particularly after o/c there's only a handful of applications it is noticeably faster then a 2500K - that's the real winner.
 

aigomorla

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Sep 28, 2005
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Not sure how this is moot, as this is more aimed at highlighting how good Sandy Bridge is and how poor of an idea going 1356 will have turned out to be. Er, also, this pretty much proves you wrong as well, as in most things the 990x did not spank a 2600k, in fact, it lost most of the time.

I said ON MY PLATFORM.
Im fairly sure my platform is > his.

First off in Overclocking.. its always YMMV, their is no exception to this.. Your Millage Will Vary, and Vary quite drastically at times too might i add.

Second you look at the rest of the gear and the cooling on something like a gulftown.

Why? because the gulftown overclocked and under load can pull as much as 171 amps off your socket. (240W load @ 1.4Vcore)

This means the rest of your EQ will play a hugh role in how well your gulftown goes.

My 990X is well capable of this if i want to run a quick benchmark.
990XAir.jpg



Once again u dont get a 990x unless u know what your doing with it, or your straight up greedy like i am. :ninja:

Its like going back to Anand's Post on the 980X and how everyone Neutered him because he OC'd it on a stock X58 Intel Board.

Someday in a pm could U explain why you keep putting down SB 4 core. U been saying the same thing for over a year now .

The only thing going to beat SB is a faster SB . By the time we have Alot of highly thread apps for consumer market There will be 14 intel cpus on one die

Because u dont pull up hexcore vs quadcore.
Not to mention a Hexcore in the hands of someone who has the proper gear to unlock the hexcore.

And i probably can beat all his Sandy Bridge benchmarks with my 990x.

24/7 clock alone is at 4.5 /w HT ON with 1.375vcore.
I bet Ruby could even do it as well on her 980X even, seeing how her 980X is > then my 990X.

Lastly as i type this.. i am typing it on a Sandy.
2600K + M4E + Ati 5550, i threw together as a temp driver.
990x is undergoing a massive rebuild which can take up to a week. :\
 
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Dadofamunky

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Jan 4, 2005
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So Intel released the 990x knowing it's obsolete. Yeah, right. Whatever gives you warm fuzzies about your chip of choice.

(***chuckle***) Have a nice night thinking about the rapid obsolescence of your expensive technology. :D

Aigo at least has a sense of humor about it
 
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Mloot

Diamond Member
Aug 24, 2002
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I haven't followed SB articles much, so I was surprised at how poorly the 1100T did in video encoding, even at 4ghz.
 

Edrick

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Feb 18, 2010
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And i probably can beat all his Sandy Bridge benchmarks with my 990x.

But you are comparing a $999 CPU to a $349 CPU. Even with the 990x slightly beating a 2600k in certain benchmarks, the 2600k is the true winner due to its price point. At least in my opinion.
 

Edrick

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Feb 18, 2010
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So Intel released the 990x knowing it's obsolete. Yeah, right. Whatever gives you warm fuzzies about your chip of choice.

Yes, I believe this to be true as well. Intel is trying to squeeze every last penny from the x58 platform before they release LGA2011. It is just good business.
 

Ben90

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Jun 14, 2009
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I think both P67 and X58 sides have merit. X58 can't match the single threaded performance of P67, and P67 cannot keep up once things start becoming more parallel.

P67 is also the undisputed king of price/performance. Once you start raising the budget over $5000, X58 has a lot more to offer as a platform.

Us enthusiasts always want there to be a clear best of everything. Unfortunately this is not the case and we have to balance between price, performance, features, and a multitude of other things.

If I had an unlimited budget, I would be on a Power7 system right now with a team of programmers rewriting whatever I needed to be compatible with it.
 

Arkadrel

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Oct 19, 2010
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2600k is a monster, spanks the 990x, at half the power too.

Ivy Bridge is gonna be crazy... even if its just running 20% higher clock rates, it ll still be a monster.