Why is my i5 2500K at 5Ghz still so great?

[pantsaregood]

Calling Sandy Bridge "three generations old" isn't really fair, either. Ivy Bridge was a die shrink - Intel called it a new generation, but the architecture was unchanged.

Nehalem/Westmere formed the first generation of the Core architecture.
Sandy Bridge/Ivy Bridge formed the second generation of the Core architecture.
Haswell/Broadwell form the third generation of the Core architecture.

Nehalem to Sandy Bridge yielded 10-15% higher performance per clock.
Sandy Bridge to Haswell yields 10-15% higher performance per clock.

It's not a huge leap, but it's there.

 

[tweakboy]

I believe i5 means no HT , that is budget CPU.

 

[Fjodor2001]

Calling Sandy Bridge "three generations old" isn't really fair, either. Ivy Bridge was a die shrink - Intel called it a new generation, but the architecture was unchanged.

Nehalem/Westmere formed the first generation of the Core architecture.
Sandy Bridge/Ivy Bridge formed the second generation of the Core architecture.
Haswell/Broadwell form the third generation of the Core architecture.

Nehalem to Sandy Bridge yielded 10-15% higher performance per clock.
Sandy Bridge to Haswell yields 10-15% higher performance per clock.

It's not a huge leap, but it's there.

SB->IB brought ~8% IPC improvement.
IB->H brought ~8% IPC improvement too.

Interesting that both provided about the same IPC improvement, despite IB not being an uarch change, but H was.

However is it really true to say that IB was no uarch change at all? Then how did they achieve the same IPC increase as H?

 

[BallaTheFeared]

It seems to me, Ivy was a tweak a tester for Haswell, and Haswell employed those tweaks as well as a few of its own.

Most of Haswells changes are directed towards AVX and power consumption, both points they excelled considerably over SB in, however power isn't as clear cut against Ivy, but still in AVX it's just as dominate over Ivy. Ivy only got the shrink and 3d gate afaik, which is why it has much of the power savings but not all of it as well as some of the IPC gains but not all of it and none of the AVX changes.

 

[BUnit1701]

At its launch, Ivy was touted as a 'Tick+' which fits in well with the two posts above.

 

[pantsaregood]

Ivy Bridge very rarely brought an 8% improvement in performance. It very often brought no improvement in performance because it was relatively unchanged from Sandy Bridge. It was generally called a "Tick+" because of the improvements to the IGP.

 

[Maximilian]

My Sandy Bridge is 3 generations old yet it's STILL a powerhouse especially at 5GHz. Anybody else got one and think the same?

Yes, its not a 2500k ive got but its sandy bridge architecture. I forsee it crushing games for the next 5 years. :thumbsup:

 

[aigomorla]

u think u have it bad.... what about gulftown owners at even 4ghz.. >.<
they been stuck in a void known as the black hole... because

intel said u guys arent exactly full on enthusiast with fastest cores deal...
and were not really enterprise with maor stable cores...
so we deserve to be in the "lost and confused" section at intel, because we want MAOR FASTEST CORES together,
which gulftown was at its generation.

 

[Kenmitch]

Looking @ Cinebench 11.5 the difference is not that drastic for multicore.

19.) BallaTheFeared | i5-4670K| 4.9GHz| 8.35 DDR3 @ 1600Mhz
21.) Face2Face| i5-3570K| 5GHz| 8.29 DDR3 @ 1866Mhz

Yep.....Software dependent of course.

It was just an example of how the architectural difference thru the generations can be of benefit without using new feature sets.

 

[BSim500]

My Sandy Bridge is 3 generations old yet it's STILL a powerhouse especially at 5GHz. Anybody else got one and think the same?

Just be grateful you don't own an i3. It took 2 generations Clarkdale->Sandy->Ivy for the new chips to not be slower due to Intel's "full on nerfing" of all OC on i3's! ie, it took an i3-3220 @ 3.3GHz just to match an i3-530 at typical 3.9GHz OC. i3-530 -> i3-2100 was actually a downgrade. i3-530 -> Ivy i3-3220 was a sideways upgrade. Haswell i3-4340 is actually the first chip in 3 years that's a whopping 8% faster... D:

 

[BallaTheFeared]

Yep.....Software dependent of course.

It was just an example of how the architectural difference thru the generations can be of benefit without using new feature sets.

8.58 was what I got at 5Ghz

Which is a bigger difference than what the points indicate with Cinebench.

5GHz Haswell is faster than 5.6GHz SB, or 5.4GHz Ivy.

That said it's legacy FPU code, compare our chips in something like Handbrake and the gap will widen.

 

[lopri]

Imagine GeForce 880 would be 8% faster than GeForce 780. Imagine Radeon 8970 being 8% faster than Radeon 7970. I am being generous about that 8%, BTW. (Heck I think Phenom I -> Phenom II brought more performance delta than that)

Who want to upgrade?

 

[BallaTheFeared]

Imagine CPUs with 250w TDP

Imagine CPUs benefiting from infinite parallelism.


Going from a bad cpu to a decent cpu is much easier than going from your best cpu in history to one that improves upon it.

 

[Face2Face]

8.58 was what I got at 5Ghz

Which is a bigger difference than what the points indicate with Cinebench.

5GHz Haswell is faster than 5.6GHz SB, or 5.4GHz Ivy.

That said it's legacy FPU code, compare our chips in something like Handbrake and the gap will widen.

Downclock your ram to 1866Mhz(9-9-9-27) and run it at 5Ghz - Would be a great way to make a direct comparison.

 

[lopri]

Imagine CPUs with 250w TDP

Imagine CPUs benefiting from infinite parallelism.


Going from a bad cpu to a decent cpu is much easier than going from your best cpu in history to one that improves upon it.

It's too funny to hear cry foul because the comparison wasn't solely among Intel stuff. I suppose nothing is good enough for Intel, so I will reply with an example purely made of Intel.

You have a laptop running Intel CPU @2.0 GHz. It is a full-blown X86 CPU and it's best of the best! A year later, a new laptop with a new Intel CPU that runs @2.2 GHz comes along. It is still the best of the best and it does everything and cure cancers.

10% performance increase! (instead of paltry 8%) Upgrade? :biggrin:

 

[BallaTheFeared]

Downclock your ram to 1866Mhz(9-9-9-27) and run it at 5Ghz - Would be a great way to make a direct comparison.

Unfortunately my ram doesn't overclock that high

 

[Slomo4shO]

Your statement provides no context whatsoever. It is one sentence and leads the reader to infer Intel has no competition anywhere as the "default" inference. Don't blame me for your omission in providing context.

The response was a direct response to the OP:

My Sandy Bridge is 3 generations old yet it's STILL a powerhouse especially at 5GHz.

Apparently this statement provides no context for you whatsoever... You can infer whatever you like as long as you continue to disregard the topic of this thread... Go ahead and continue to pretend as if this thread was about anything other than enthusiast desktop CPUs.

 

[tweakboy]

Nice OC I wonder if it can handle full load 100 percent. thx gl

 

[The Sauce]

Been running my 2500k @ 4.7 since it came out. I have no desire to upgrade whatsoever - which is a bummer because I love upgrading. This chip can still slam any new game with a good GPU on board.

 

[tweakboy]

2500k will do 4Ghz easy. Just change the blck and remember to change your RAM to memory specs or below. No need to change voltage. gl

 

[tweakboy]

Yes, its not a 2500k ive got but its sandy bridge architecture. I forsee it crushing games for the next 5 years. :thumbsup:

RAM has gotten expensive but you can put in a 16GB kit come on. You have the sickest CPU yet only 8GB. What do you do ? I noticed you had a Xonar ...thx gl

 

[fixbsod]

FYI -- i7-2700k @ 3.9 GHz DDR3 @ 1600 I score about a 7.6x in cinebench -- more / ghz??

Looking @ Cinebench 11.5 the difference is not that drastic for multicore.

19.) BallaTheFeared | i5-4670K| 4.9GHz| 8.35 DDR3 @ 1600Mhz
21.) Face2Face| i5-3570K| 5GHz| 8.29 DDR3 @ 1866Mhz

 

[FalseChristian]

The response was a direct response to the OP:



Apparently this statement provides no context for you whatsoever... You can infer whatever you like as long as you continue to disregard the topic of this thread... Go ahead and continue to pretend as if this thread was about anything other than enthusiast desktop CPUs.

Are you on drugs? I'm the one who started this thread. I'm the OP. What you said is derogatory and makes no sense. Get off the drugs.

 

[Sheep221]

I'm glad that the development is a bit stagnating so I don't need to replace my rigs every 3 years like retard, with ongoing upgrades over a time. My SB rig will be soon 2 years old and I haven't invest the cent in it and it is still relevant for any of the hardcore tasks.

Calling Sandy Bridge "three generations old" isn't really fair, either. Ivy Bridge was a die shrink - Intel called it a new generation, but the architecture was unchanged.

Nehalem/Westmere formed the first generation of the Core architecture.
Sandy Bridge/Ivy Bridge formed the second generation of the Core architecture.
Haswell/Broadwell form the third generation of the Core architecture.

Nehalem to Sandy Bridge yielded 10-15% higher performance per clock.
Sandy Bridge to Haswell yields 10-15% higher performance per clock.

It's not a huge leap, but it's there.

This is not correct, the core architecture was discontinued shortly after Nehalem was released.
Nehalem is base of the Core i branding and the following SB, IB, HSW architectures are incrementals of Nehalem. I'm not denying that Nehalem might use something from Core architecture, but it was heavily redesigned, featured processor graphics, integrated memory controller and L3 cache, it also featured first mainstream hex core CPUs.
The Intel Core brand is confusing tho.

 

[tential]

Yes that's the rumor, but my interest is in the Tocks, not the Ticks.

Hopefully we'll still see a desktop Tock on 14nm, otherwise we're dead in the water!

My knowledge is that due to the nature of the Desktop market, we will ONLY see tock now instead of ticks. Mobile will see the tick though. This makes more sense as the desktop market isn't really booming.