Why Q9400 is much more slower than i5 2400?

[Keyz]

They have similar speed and cache. They are both 4 core. My Q9400 is on 3,3 Ghz
Somebody told me, that it is matter of Instructions. "i" generation has new Instruction. But what Instructions exactly, makes big difference? In test i can see, that i5 are mutch more faster than old quads.

Thank you for explanation.

 

[FreedomEclipse]

Skt 775 is old tech, thats all

Architecture becomes more efficient and gives more/better CPU cycles per clock so it can do more when running at the same speed.

What instructions it has makes no difference at all unless you really need them.

If the Q9400 was just as fast as todays i5's they why would people bother to upgrade?

 

[MxPhenom 216]

They have similar speed and cache. They are both 4 core. My Q9400 is on 3,3 Ghz
Somebody told me, that it is matter of Instructions. "i" generation has new Instruction. But what Instructions exactly, makes big difference? In test i can see, that i5 are mutch more faster than old quads.

Thank you for explanation.

All new architectures. Cache speeds, memory bandwidth is easily double, etc.

You cant really compare old Core 2 architecture to new Core i series architecture. Its like comparing Apples to Oranges IMO.

Also instruction sets can make a difference Newer chips like Haswell have AVX2 instructions, which come in handy for encoding if that encoding uses such instructions. Ivy Bridge has AVX.

Also your Q9400 only has L2 cache. New chips have L3, L2, and L1 caches.

 

[Constantine Yevseyev]

Every new CPU generation brings some architecture-level improvements, new ways of organizing the data flow inside the CPU itself and the way it interacts with other system components via so-called interface buses. Your CPU belongs to "Intel Core" (2006) era, which is followed by Nehalem (2008), then Sandy Bridge (2011), Ivy Bridge (2012), and the modern Haswell (2013). There were some game-changing things, such as Ring Bus, integrated memory controller, PCI-Express and VRM controllers amongst other principal changes in CPU design.
So I'd say it's never about cores and Hertz.

 

[DF is BUSY]

wouldnt be surprised to see some of the newer i3's be on par with the 775 quads.

 

[Bo$$]

wouldnt be surprised to see some of the newer i3's be on par with the 775 quads.

yes the SB i3 was exactly the same speed as a Q6600.

 

[Keyz]

Thanks for info.

And what about intel i5 2500k and Haswell?
I wonder how often i should buy new stuffs.

 

[MxPhenom 216]

Thanks for info.

And what about intel i5 2500k and Haswell?
I wonder how often i should buy new stuffs.

Buy new stuff, till your current stuff does not offer the performance you need.

From 2500k (Sandy Bridge) on its been incremental improvements. Smaller CPU dies, new tri gate transistors (http://en.wikipedia.org/wiki/Tri-gate_transistors_(Intel)#Tri-gate_transistors), changes to voltage regulation (Haswell iVR), cache and memory performances.

All of this either results in slightly better performance per clock cycle and reduced power consumption.

Though from Core 2 to lynnfield (Core i5 7xx/Core i7 8xx) and then to Sandy Bridge was the biggest performance boosts. After Sandy like I said, its been incremental increases ~15% max.

Some of us, (me for instance) buy new stuff almost every generation or every other. Especially for GPUs I buy yearly. I have a GPU obsession, or just hardware in general. I like playing with the new stuff.

 

[Keyz]

OK.

 

[eidairaman1]

Old tech vs new

 

[Keyz]

Last question. On one HW forum i was asking about new PC with budget about 1500 USD. But they told me, that it does not matter what i buy because most of the stuff that is on market is not good if terms of HW durability.

I mean. I have Q9400 and Asus P5Q Pro,CORSAIR VX550 and i did not have problem with HW. It is old PC but it works overclocked very well.... So my question is. If i buy new expensive motherboard like my old Asus. Will it be good?

I do not want buy new motherboard every year. Same for PSU.

 

[Vario]

Last question. On one HW forum i was asking about new PC with budget about 1500 USD. But they told me, that it does not matter what i buy because most of the stuff that is on market is not good if terms of HW durability.

I mean. I have Q9400 and Asus P5Q Pro,CORSAIR VX550 and i did not have problem with HW. It is old PC but it works overclocked very well.... So my question is. If i buy new expensive motherboard like my old Asus. Will it be good?

I do not want buy new motherboard every year. Same for PSU.

No way to really know but not overclocking will help a lot. Buying a quality power supply will help too.

 

[eidairaman1]

a bigger higher end Corsair might help but it depends on the components on the motherboard, ram and cooling of all circuits

 

[Vario]

you could get a quality workstation board and an e3 xeon or something, those are likely more suited for longevity.

 

[Keyz]

Thanks for help.

 

[GreiverBlade]

Every new CPU generation brings some architecture-level improvements, new ways of organizing the data flow inside the CPU itself and the way it interacts with other system components via so-called interface buses. Your CPU belongs to "Intel Core" (2006) era, which is followed by Nehalem (2008), then Sandy Bridge (2011), Ivy Bridge (2012), and the modern Haswell (2013). There were some game-changing things, such as Ring Bus, integrated memory controller, PCI-Express and VRM controllers amongst other principal changes in CPU design.
So I'd say it's never about cores and Hertz.

well the E9400 core is a Yorkfield since you name every other "core" generation by their core name Nehalem Sandy Ivy haswell are all "core" type

as for the OP: as long as the rig can run what you need at a decent speed, it's all good
i use myself a DC7900 from HP which sport a Core 2 Duo E8500 (Wolfdale) with 4gb ram and i am rather impressed of the perf it can still achieve (not my main rig tho)

but like Vario said you can get some nice parts for cheap, i assembled myself a rig with a Xeon E3-1275V2 (ivy) a Intel Q77M and a GTX 770 8gb 2133 RAM for less than 600chf (swiss francs) (unfortunately i had to sell it )
actually you can get some decent deal on the Ivy gen or even Haswell, i saw some Z87 mobo for 50chf (2nd hand but new and under warranty) and some i5 for 20-25% less than the retail price. (but that's zone dependent ... ofc)

 

[Constantine Yevseyev]

well the E9400 core is a Yorkfield since you name every other "core" generation by their core name Nehalem Sandy Ivy haswell are all "core" type

Are you sure? I believe that "Yorkfield" was just a processor name, like "Wolfdale" or "Harpertown", and that tradition (arranging CPUs by code names) died immediately when first i7 CPUs for X58 platform arrived. But I caught your meaning anyway, and I think you were talking about "Penryn", and not the "Yorkfield", right, the actual name of the microarchitecture?

 

[GreiverBlade]

Are you sure? I believe that "Yorkfield" was just a processor name, like "Wolfdale" or "Harpertown", and that tradition (arranging CPUs by code names) died immediately when first i7 CPUs for X58 platform arrived. But I caught your meaning anyway, and I think you were talking about "Penryn", and not the "Yorkfield", right, the actual name of the microarchitecture?

well the core name of the E9XXX serie is Yorkfield as the E8XXX is Wolfdale just like Nehalem for my previous i7-920 (drat it was a Bloomfield...) or Ivy Bridge for my other previous E3-1275V2

i am talking about core name not processor codename : Penryn is a processor codename, Core is a micro-architecture name as Nehalem Sandy Ivy, well intel can get pretty confusing ... as all modern cpu goes by the Core i7/i5/i3 name ...

ok let say i said nothing ahahah
as for Penryn we have Wolfdale Yorkfield and others ... for Nehalem we have Lynnfield Bloomfield...
the CPU on the X58 all did goes by Nehalem Bloomfield since there was only I7 (if we except Xeon type IE: W3505 micro-arch nehalem core name Nehalem-WS platform name Tylesburg-WS)

still Ivy-Bridge H2 is a core name, and Ivy-Bridge is also the Micro-architecture the platform name is Carlow for the E3-1275V2

i7-4770K core name Haswell micro-arch Haswell ... duh and double duh ... thanks intel to make it simpler now

(in the end i was not talking about the penryn .... but indeed the Yorkfield ... since now all core name goes by the micro-arch name ... afk aspirins ....)

 

[Constantine Yevseyev]

Damn, it's all Intel's fault!

 

[Aquinus]

You're all missing one of the biggest things that impacts performance between the Core 2 series and the i series CPUs. The memory controller was moved from the chipset to the CPU. AMD did this for a while and it gave them a reasonable advantage until Intel smartened up, much like how from 1366 to 2011 the PCI-E root complex was moved from the IOH to the CPU, however I'm annoyed that they didn't stick with QPI for chipset communication.

 

[FreedomEclipse]

wouldnt be surprised to see some of the newer i3's be on par with the 775 quads.

the i3-4130 is a little faster than the Q6600 so i suppose its more or less the same when compared to the Q9400

 

[Jetster]

Its like the gap between the Penitum D dual core and Core 2 Duo. Big diference. Unlike goin from 1156 to 1150 four generations. Not so much. So how often should you upgrade? There is not a clear answer for this