New Build: 2500K or 3570K

[SheHateMe]

Hey guys,

My AMD system retired itself early after a mishap with my PSU and Mobo. I am wanted to go with Intel this time around to see what all the hype is about.

However, I can't seem to figure out if I should be getting the Sandy Bridge or the Ivy Bridge. People keep saying don't get the Ivy because its too hot, but I am reading reviews that have good temps for it..also, all this talk about PCI Express 3.0. Do I really need that? Im planning on getting a 7950 thats PCI 3.0...what difference would it make?

Both CPUs are similarly priced.


Let me know whats up!

 

[cmdrdredd]

3570k is newer tech, lower power usage, supports PCIe 3.0, and the performance per clock is higher.

 

[fastamdman]

If you are looking to overclock I would recommend the 2500k over the 3570k, especially if you are on air cooling. The newer 3570k's can get very very hot while overclocking. I would grab a cheap used 2500k and enjoy it until haswell personally.

 

[cmdrdredd]

If you are looking to overclock I would recommend the 2500k over the 3570k, especially if you are on air cooling. The newer 3570k's can get very very hot while overclocking. I would grab a cheap used 2500k and enjoy it until haswell personally.

Not this again...they output less heat but run higher core temps. For a brand new build there is ZERO reason to buy sandy bridge which is old tech at this point.

90c on the core(s) isn't going to make it blow up.

OP: refer to these threads. All the arguments back and forth you could ever want about your exact question. I myself asked the same question and for $20 I decided that lower power consumption, PCIe 3.0 support, and better performance at the same clock speeds was worth $20 extra price. 4.5Ghz is very reasonable on a 3570k and you won't be held back by it. Others have achieved better clock speeds than that.

http://forums.anandtech.com/showthread.php?t=2257111&highlight=ivy+bridge
http://forums.anandtech.com/showthread.php?t=2255699&highlight=ivy+bridge
http://forums.anandtech.com/showthread.php?t=2251837&highlight=ivy+bridge

 

[MustangSVT]

It's really upto you. Can't go wrong with either.
this is what I've gathered so far.

2500k
$20 cheaper
Does o/c little better.

3570k
pci 3.0 and new stuff DOES make a reasonable difference (read the review on hardocp).
might o/c little less, but the outcome performance is same or higher.

So, in my opinion the performance is similar after the o/c. but now the $20 difference is only thing to think about .
And you'll be fine with either choice.

 

[cmdrdredd]

The thing with heat is people used to OC a 2500k on a $30 cheap junk (IMO) cooler. With a 3570k that same $30 cooler doesn't do as well. A lot of internet posts are all panic mode about this. If they had researched the specifics of the new CPUs they would realize they will see higher core temps because of the cores being closer together and things like that.

 

[ShintaiDK]

3570k

 

[fastamdman]

If you can find a good deal on a used 2500k jump on it, otherwise go with a new 3570k. I really don't see a reason in buying a new 2500k currently.

cmdrdredd - Now matter what cooling you are using on the IB chips, when pushed hard they run hot, plain and simple. Higher temps are bad, no matter what you may think. The lower the temps are, the better they are and the longer the chips are going to last. If a 30 dollar heatsink can dissipate heat better then a 150 dollar one, it's better. Price doesn't dictate whether or not something is better, facts do. Facts show the hyper 212+'s to be great coolers. Facts also show the IB chips run extremely hot even with low voltages. 90c might not make a core blow up, but it sure as hell is way to hot for daily use and isn't considered safe by the majority of us.

 

[pantsaregood]

A 3570K can overclock just as far as a 2500K on the same cooler. People just happen to flip out because core temperatures might hot 90 C instead of 75 C. 90 C is reasonably far from the throttle temperature of Ivy Bridge, and it isn't going to run that hot unless you enjoy running Linpack.

 

[BD231]

If you don't want to spend much on cooling the 2500k is a lot easier to OC, Ivy is just an el-cheapo die shrink and much better suited for lower clocks/power consumption.

 

[cmdrdredd]

If you can find a good deal on a used 2500k jump on it, otherwise go with a new 3570k. I really don't see a reason in buying a new 2500k currently.

cmdrdredd - Now matter what cooling you are using on the IB chips, when pushed hard they run hot, plain and simple. Higher temps are bad, no matter what you may think. The lower the temps are, the better they are and the longer the chips are going to last. If a 30 dollar heatsink can dissipate heat better then a 150 dollar one, it's better. Price doesn't dictate whether or not something is better, facts do. Facts show the hyper 212+'s to be great coolers. Facts also show the IB chips run extremely hot even with low voltages. 90c might not make a core blow up, but it sure as hell is way to hot for daily use and isn't considered safe by the majority of us.

No, read the threads. It's been proven incorrect thinking.

 

[BonzaiDuck]

No, read the threads. It's been proven incorrect thinking.

I'd like to see the thermal issue resolved -- either by Intel or through proven DIY experiments -- but the latter option or the trouble involved make me less eager to replace an SB with an IB. [And likely I might even have to explain to MS that I just replaced a processor, so I can "reactivate" my OEM Win 7.]

If you already have the Sandy and actually "USE" your computer for various things, I'd say it's a matter of choice.

If you are upgrading from Nehalem or socket-775, I'd say get the Ivy Bridge core. But you are still going to deal with -- or wonder about -- the thermal limitations that Intel might very easily have avoided from the beginning with a minor change in their production process at very little or no cost to themselves or the consumer.

See -- I don't mind voiding my warranty by carefully lapping the nickel off the IHS of a new processor. I'm less eager to pull the lid off the processor with a razor-blade (although I might do that anyway . . . . later . . . ).

 

[cmdrdredd]

Nobody said a word about de-lidding.

This is a new build question so I don't know why you're talking about moving from SB to IB.

 

[poohbear]

go with whatever's cheaper. U can find many 2500k cpus being sold used for cheap.

 

[BonzaiDuck]

Nobody said a word about de-lidding.

This is a new build question so I don't know why you're talking about moving from SB to IB.

I agree with your point on that. I was just explaining my own perspective on the choices. As you see, I told him to get the IB under the "new build" scenario. Sorry for the verbosity and waste of time . . . I suppose . . .

 

[SickBeast]

OP either will be fine. PCI-E 3.0 might give you 2-3% more performance with a single GPU or else maybe 10-15% with a dual GPU setup. If you're only going to use a single midrange GPU there will be no difference and you can just get whatever is cheaper. That said, the Ivy chip might save you $20 on electricity over its lifespan.

 

[Fjodor2001]

I would grab a cheap used 2500k and enjoy it until haswell personally.

I'd grab a 3570K and enjoy it until Skylake...

 

[SheHateMe]

Im going with 3570K then. Its actually $214 on Amazon right now. Much cheaper than Newegg!

 

[ShintaiDK]

If you live near a Microcenter. Then remember its even cheaper.

 

[SheHateMe]

There is a Microcenter in Michigan, I am just not close to it at the moment. Plus, I have the pay tax there..so wouldnt it come out to be the same price as amazon?

 

[cmdrdredd]

There is a Microcenter in Michigan, I am just not close to it at the moment. Plus, I have the pay tax there..so wouldnt it come out to be the same price as amazon?

No because at Microcenter you can bundle a motherboard and the CPU for cheap. Like people were getting Asrock Z77 Extreme 4 motherboards for around $100 or something when bundled with a 3570k.

 

[rgallant]

I went with ib for the low voltage , as temps 20% below tmax don't bother me , but running a sb 1.4++++v does.

funny how sb owners don't care about the high overvoltage on their sb for the same clock's \ipc on ib, but pick out the under max. temps of ib because it's a higher number than their sb , but with less current going to ib which is what causes the stress to the mb/cpu.

 

[pantsaregood]

Ivy Bridge cores run hotter than Sandy Bridge cores. It doesn't matter, though - the silicon doesn't care. It isn't breaking the safe thermal limits Intel declared, so there isn't any real reason to worry about it.

Also, PCI-E 3.0 won't give a 2-3% increase in performance. More like a 0-0% increase. Modern GPUs are only starting to push the bandwidth provided by AGP 8x.

 

[rgallant]

if pci-e 3.0 worked on the current gpu's , cpu's , mb's by spec. should give 10% but it does not , why not ?
-we know x79 cpu's only return 75% spec'ed data feed from the cpu and why intel rated them at 2.0 ,but nv pulled drivers [no support ] for pci-e 3.0 on those cpu based on the mb's builds.
-side note: a gtx 680 will be a low range vid card in 3 yrs , the life of a system so a 3.0 system today could be useful in 1-2 yrs the way I look at it running sli @ x8 + x8

 

[BuckNaked]

Im going with 3570K then. Its actually $214 on Amazon right now. Much cheaper than Newegg!

If you look at the newegg listing, they have a promo code for $15 off the $229 price that makes it the same...

Just ordered one yesterday...