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£6400 2.1 or 2.050

Bolerus

Bolerus

Bolerus

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7 Jul 2006
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Stoke on Trent
I am looking at cpu-z and it is showing my new e6400 as 2.050 as opposed to 2.1.

Is that correct?

I know that is a tiny difference, but I just wanted to be sure I havent got a fualty one before I go any further.


I am starting to notice some differences between this cpu and my old northwood 2.8 (not so much that is faster, but that it doesent slow down in places the old one did, if that makes sense)

I am sure that a few people reading this (or maybe i am being arogant) remember my "no no dont overclock" opinion.

I have to admit, I am starting to wonder if I should Oc just a little bit (if I did I wouldnt go any higher than probably 2.8) but I want to be sure that I havent got a slightly dodgy cpu before i try to research how to overcloock, hence this post
 
An e6400 should be 2.13ghz. Anything else and something is wrong. Make sure you're using the latest cpu-z.

Also, a single core of your e6400 should be twice as fast as your northwood. However, youll only recognise this in benchmarks.
 
ghost101 said:
An e6400 should be 2.13ghz. Anything else and something is wrong. Make sure you're using the latest cpu-z.

Also, a single core of your e6400 should be twice as fast as your northwood. However, youll only recognise this in benchmarks.
Click to expand...

certainly not getting twice as fast


6400 result (with 2 gig ddr 400 mem)
http://www.geekpatrol.ca/browse/2006/?view&id=14757

you will also note

Processor Frequency 2050 MHz
Bus Frequency 266 MHz
Memory 2047 MB

so that is showing as 2050 as well as cpu-z

northwoods results (with 1 gig of ddr 333 mem)

http://www.geekpatrol.ca/browse/2006/?view&id=14761


It is higher, but certainly not twice as fast, and the memmory has major contribution, with 1 gig in the e6400 I was getting 189 score
I arnt at home at the moment, when i get hom i will post up the cpu-z screen
 
What times do you get in super pi?

As for the cpu speed. If its running at an FSB of 266mhz, it would be at either 2.13/1.86/1.6ghz. So i think it is running at the full 2.13ghz and your motherboard is reading something wrong.

The other thing im puzzled with is how the northwood is actually beating the conroe in single threaded benchmarks.
 
sorry (noob alert) what is super pi?


I would imagine the northwood beats the conroe in some single thread test because the northwood is 2.8 ghz and the E6400 is 2.1 (or 2.05 as it seems to be runnign at) ghz

I am totally new to the new style of cpu ratings though
 
the cpu win is

bmnark.jpg



i just noticed 8x multiplier? is that right?

and bus speed 252 ? that seems a stragne number (if that was 266 x 8 then it woudl be 2.128 which is more the expected number)


/boggle
 
so why are mine below that?


I know it is only a little bit below, but still it is below


what could be causing this, should I take the cpu back to overclockers and get them to test it?
 
arock 775 dual -vsta


i have looked in there and it is set to 266, and greyed out, so i couldnt choose it if i wanted to
 
well

I have just spoken to a guy at OCuk

He basically said he the chip will be fine it is something on the motherboard.


I had looked in there before but was happy to follow his advice and look again

went into bios and into advanced, the fsb was set to 266 as it shoudl be.

turned off, re-set the bios jumper to clear

started up, changed the memmory back to ddr400 (it sets to 333 as defualt)
set the overlcocking mode to one of the manual modes (there are 2 modes)

didnt change the fsb multipliyer thing, so that was still 266 as it said

booted machine

ran cpu-z

and now

corespeed :-- 2128.8 - 2129 (not quite the 2133 that it should be but close enough)
multipliyer x8.0
bus speed 266.1 (yay)
rated fsb 1064.5 (close enough)

I tried setting the options to manual earlier today, after my last post, but that made no difference.

I guess that is what I get for using a a cheap (and temproary ) mother board lol

Are those number im gettign now normal and expected, or should I be looking into other areas for the little extra im missing from the advertised ratings?
 
Bolerus said:
sorry (noob alert) what is super pi?


I would imagine the northwood beats the conroe in some single thread test because the northwood is 2.8 ghz and the E6400 is 2.1 (or 2.05 as it seems to be runnign at) ghz

I am totally new to the new style of cpu ratings though
Click to expand...

Clockspeed means nothing. Core 2 averages 3-4 instructions per clock (Max 5) while P4 averages 2 instructions per clock (max 3). Amd64's run at virtually full speed all the time, so 3 instructions/clock average, max 3.

So at 2.05 Ghz, a Core 2 on average doing as much work as a 3.58 Ghz P4. Core 2 has other tricks though which take it further ahead, for instance when executing SSE instructions a Core 1 can processess 1x128bit SSE instruction in a single clock cycle, a P4 on the other hand, has so break the instruction into 2 64bit chunks, and then process them, this procedure means the P4 takes 2 clock cycles to exectute a single 128bit SSE instruction.

Core 2 is a leap ahead of P4 in all respects.

What memory are you using on your rig, Core2's high FSB (1066), demands at least DDR2@533 to be running 1:1, faster memory will bring some improvement, but slower memory will hold back system performance. While not as critical as P4's, Core2's still prefer low latency memory, so assuming stock speed, C4, or even C3 latency on DDR2 memory will show a considerable speed improvement over 'standard' cheap C5 latency memories.
 
yeah there all perfectly normal numbers, you'll be lucky for your CPU to ever run at the EXACT frequency
 
I tried out that bench you used, Scored 326, with my system at stock speed (2.67Ghz E6700), removed my overclock to make sure the FSB was 1066mhz :P.

Anyway, I reckon with good low latency DDR2, (cas 4 or better), your E6400 should be able to hit at least Score 260 without any bother at all. Which is twice what your P4 was giving. Still your score wasnt anything to worry about, and in 'real world' applications Core2 generally walks all over a P4 at any clock speed.
 
fixing that little problem gave me an extra 20 points,

i wasnt concerned so much abotuthe score, but more that it was clocking at 40 fsb lower than it was supposed to
 
Bolerus said:
the cpu win is

bmnark.jpg



i just noticed 8x multiplier? is that right?

and bus speed 252 ? that seems a stragne number (if that was 266 x 8 then it woudl be 2.128 which is more the expected number)


/boggle
Click to expand...

Hi peeps

i'm (newb sorry)
i was interested in this post as i am running the same MOB. Although i have to hold my head in shame and admit to running 2 x 1gig pc2100 266mz

I would like to Know where the bios reset is?

My CPU-Z says the same.

Any help to achieve the same goals?. :)

73935624.1r02q7AW.corespeed.jpg
 
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