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Fastest Monolithic Single Core x86 CPU

nenforcer

nenforcer

Golden Member
The world will probably never see a newly designed, single core CPU of any architecture.

I wanted to know what is the fastest single core x86 CPU produced by both AMD & Intel.

I don't want to include running a single core (Turbo Boost) of a multi core CPU, either.

I will try and include both Opteron and Xeon server chips but I don't know enough about those.

Of the existing single core CPU's for sale I don't think you can count the

AMD Sempron 140 / 145 (Sargas) since despite AMD's marketing it as a single core it will actually unlock to a Athlon X2 4400E CPU.

Intel has the Celeron 430 Conroe-L LGA775 @ 1.8GHz with 512Kb L2 Cache but at that speed I don't think it would qualify for the fastest if it is truly a single core Core 2.

To me it looks like on the AMD side it was the

AMD Athlon 64 FX 90nm San Diego core FX-55 and FX-57 @ 2.6GHz and 2.8GHz.

Or perhaps it was a Socket AM2 Athlon 64 Orleans 90nm or Lima 65nm?

It looks like the Orleans only went up to 2.6GHz while the Lima to 2.8GHz.

On the Opteron side I'm not sure if the full 1MB L2 Cache made either the Socket 940 Venus, Troy or Athens 1356 @ 3.0GHz the fastest?

The Intel CPU's I know less about since I avoided them at this time. It looks like its either the Prescott 2M CPU with 2MB L2 Cache 662 / 672 @ 3.6GHz and 3.8GHz.

Or could it be the Pentium 4 Cedar Mill 631 / 641 / 651/ 661 up to 3.6GHz? Wikipedia says overclockers got these up to 8GHz with liquid nitrogen cooling but I'm not asking about overclocking performance.

Maybe its a Socket 603 Xeon Irwindale chip I know nothing about? Everything I read says that the Opterons of this time outperformed the Xeon's in everything but a few benchmarks where Hyperthreading came into play, which sort of overrules my single core requirement.

Anyone who actually used these chips know which is the fastest?
 
The question is, why? Why limit yourself to a single-core, when you can get multi-core chips that are still the fastest for single-threaded apps.
 
Sorry, but I agree with Larry. This is a silly question in this context...You can get a quad core, with less power usage than a single core FX57, and even one of the 4 cores is more powerful than the FX-57
 
Opteron 156 is definitively the fastest single-core processor ever released when you take overclocking totally out of the equation. (and ignore newer multicore chips which annihilate these things in IPC).
 
Markfw900 said:
Sorry, but I agree with Larry. This is a silly question in this context...You can get a quad core, with less power usage than a single core FX57, and even one of the 4 cores is more powerful than the FX-57
Click to expand...

I think this is an academic question, and not one of practicality. OP doesn't appear to be trying to build some weird single-core box, just asking a question.
 
This may not qualify but I remember hearing that AMD did produce few Opteron 158 and 160 chips for special customers that never made it to open markets years back.
 
nenforcer said:
Anyone who actually used these chips know which is the fastest?
Click to expand...

Fastest at what?

The 486 cpu's used in many shuttle launches and deep-space probes probably went the fastest of any single-core.

I don't think they ever adopted pentium class (rad-hardened, etc) for space, could be wrong though, haven't talked to the NASA guys in a while.
 
Idontcare said:
Fastest at what?

The 486 cpu's used in many shuttle launches and deep-space probes probably went the fastest of any single-core.

I don't think they ever adopted pentium class (rad-hardened, etc) for space, could be wrong though, haven't talked to the NASA guys in a while.
Click to expand...

LMFAO! Yea they sure were "fast".

I've read of an article where one of the satellites launch in 2005 or something was supposed to feature the PowerMac G5 CPU. I don't know if that ever materialized.
 
Idontcare said:
Fastest at what?

The 486 cpu's used in many shuttle launches and deep-space probes probably went the fastest of any single-core.

I don't think they ever adopted pentium class (rad-hardened, etc) for space, could be wrong though, haven't talked to the NASA guys in a while.
Click to expand...

lol, thread win
 
Fastest single core is probably the p3.

The one which was the predecessor to the dolthan processor, which is the predecessor of the all mighty yonah, which brought us C2D.

Incase u guys are wondering C2D was one step back, and 2 steps forward for intel.
 
aigomorla said:
Fastest single core is probably the p3.

The one which was the predecessor to the dolthan processor, which is the predecessor of the all mighty yonah, which brought us C2D.

Incase u guys are wondering C2D was one step back, and 2 steps forward for intel.
Click to expand...

The P3 was faster than the K7, the K8 and the P4?
 
Red Storm said:
Obviously you don't, so why are you posting in the thread?

My guess would be one of the AMD FX series processors.
Click to expand...


Yeah you're right. I apologize to the OP for that rude remark. I meant to say why are you interested in knowing?
 
we can always buy a multi-core cpu and disable the other cores, but I'm sure most people don't do this unless for specific tasks.
 
Edrick said:
How about the Core Solo T1500?
Click to expand...

That is a good choice for Intel's side but it appears that even though the Yonah core was still 32-bit it had 2 cores on die, one of which was disabled to make a Core Solo.

I'm surprised but this is actually more difficult to answer than I thought it would be.
 
With the ring bus or what ever it is called on Sandy Bridge maybe we could see a single core SB, it is supposed to scale easily... and scaling means up and down.
 
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