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Slow Core i5 or slow owner?

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January 2, 2010 9:44:24 PM

I feel my core i5 750 is performing way under par. I have it overclocked to 3.8 GHz which resulted in a 3DMark Vantage 1.0.2 CPU score a little above 17000. I looked at the Tomshardware article on this chip and they got a score in the 50,000's with a slightly higher clock. I'm not sure if they used different settings, but its buggin' the crap out of me how bad my processor did in comparison. Any hints, ideas, or tips let me know. (I don't think its heat, I've never seen it above 40C)

Another thing, when running prime95 I noticed my core #3 was running on average about 5C colder than every other core. Is this normal?

Corei5 750 @3.8
COOLER MASTER Hyper 212 Plus
MSI P55-GD65
G.SKILL Trident 4GB DDR3 2000
Rosewill RP600V2-S-SL 600W
Rosewill Wind Knight Case
XFX HD-487A-ZWFC Radeon HD 4870 1GB
Western Digital Caviar Black WD7501AALS 750GB
LITE-ON CD/DVD Burner

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January 2, 2010 9:49:21 PM

gilbadon said:
I feel my core i5 750 is performing way under par. I have it overclocked to 3.8 GHz which resulted in a 3DMark Vantage 1.0.2 CPU score a little above 17000. I looked at the Tomshardware article on this chip and they got a score in the 50,000's with a slightly higher clock. I'm not sure if they used different settings, but its buggin' the crap out of me how bad my processor did in comparison. Any hints, ideas, or tips let me know. (I don't think its heat, I've never seen it above 40C)

Another thing, when running prime95 I noticed my core #3 was running on average about 5C colder than every other core. Is this normal?

Corei5 750 @3.8
COOLER MASTER Hyper 212 Plus
MSI P55-GD65
G.SKILL Trident 4GB DDR3 2000
Rosewill RP600V2-S-SL 600W
Rosewill Wind Knight Case
XFX HD-487A-ZWFC Radeon HD 4870 1GB
Western Digital Caviar Black WD7501AALS 750GB
LITE-ON CD/DVD Burner

Which Article?

The PCs tested by them might be with better gfx and a SSD. Hence, an overall better score than you.
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January 2, 2010 9:51:47 PM

Do they use 3DMark Vantage or 3DMark 2006?
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January 2, 2010 9:53:34 PM

andy5174 said:
Do they use 3DMark Vantage or 3DMark 2006?

3DMark Vantage 1.0.2 which is what I have
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January 2, 2010 9:55:48 PM

50k on the CPU seems way out, even for an i5. im sure its influenced by other factors.

17k is definetly what i would expect an i5 to achieve. 50k seems more like a 3dmark 06 score.
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a b à CPUs
January 2, 2010 10:02:15 PM

It's 31552 which is less than 50k and hence don't expect your i5 to be able to reach 50k.
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January 2, 2010 10:05:43 PM

Thanks welshmousepk and andy. I feel a lot better about my system performance now. Does anyone know about my second question though? It seems like a good thing, a core running cold, but I'm not sure what to think of it.

Original Question

{Another thing, when running prime95 I noticed my core #3 was running on average about 5C colder than every other core. Is this normal?}
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January 2, 2010 10:07:33 PM

u wouldnt say normal, but its not unheard of either. could be a tempo sensor alittle out of whack, or just uneven heat dissipation due to contact with the heatsink.

i wouldn't worry about it though.
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January 2, 2010 10:10:11 PM

welshmousepk said:
u wouldnt say normal, but its not unheard of either. could be a tempo sensor alittle out of whack, or just uneven heat dissipation due to contact with the heatsink.

i wouldn't worry about it though.


Sounds good to me. Thanks for the help. Just making sure the the quality of my gear is where its supposed to be.
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January 2, 2010 10:11:45 PM

lol, i hear ya. im very much the same.

trying to organise getting a second video card for crossfire, but need to find some decent aftermarket coolers. a headache to say the least....
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January 2, 2010 10:15:41 PM

gilbadon said:
Thanks welshmousepk and andy. I feel a lot better about my system performance now. Does anyone know about my second question though? It seems like a good thing, a core running cold, but I'm not sure what to think of it.

Original Question

{Another thing, when running prime95 I noticed my core #3 was running on average about 5C colder than every other core. Is this normal?}

Yeah.

My core#1 is about 5~6C higher than the rest and I have heard many i5 owners have the same problem.

I guess that it is due to the bad temp sensor installed by Intel intentionally to stop peoples from extreme OC.
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January 2, 2010 10:18:09 PM

andy5174 said:
Yeah.

My core#1 is about 5~6C higher than the rest and I have heard many i5 owners have the same problem.

I guess that it is due to the bad temp sensor installed by Intel intentionally to stop peoples from extreme OC.


Haha what jerks... Thank you. You have been a big help.
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January 2, 2010 10:20:15 PM

gilbadon said:
Haha what jerks... Thank you. You have been a big help.

Not at all and welcome to TOM.
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January 2, 2010 10:58:59 PM

I see you have an ATI GPU which does not have phsyx, This is why your CPU score is so slow, check the article you read and I am sure the test machince had an Nvidia card.
I just recently switched to an ATI GPU from nvidia on an I7 860 and my CPU score dropped in 1/2. Its just physx enabled machines get a bonus on CPU score.
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January 2, 2010 11:05:57 PM

ah yes, musn't forget how much those benchies are swayed toward nvidia.

can't belive i forgot about that.
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January 2, 2010 11:11:42 PM

welshmousepk said:
ah yes, musn't forget how much those benchies are swayed toward nvidia.

can't belive i forgot about that.


NVidea must have payed a pretty penny to get that luxury. What punks... haha.
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January 3, 2010 1:56:46 AM

As surprisingly few people have mentioned on this thread, Vantage's CPU score includes Nvidia PhysX. If you don't have a PhysX capable system (Nvidia 8000 or later), your CPU score will be MUCH lower. It's not a problem, and your score is about where I'd expect an overclocked i5 to be.

My i7 sits around 23k (@3.7GHz - I can't remember the 4.2GHz score), for reference.
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January 3, 2010 2:23:56 AM

cjl said:
As surprisingly few people have mentioned on this thread, Vantage's CPU score includes Nvidia PhysX. If you don't have a PhysX capable system (Nvidia 8000 or later), your CPU score will be MUCH lower. It's not a problem, and your score is about where I'd expect an overclocked i5 to be.

My i7 sits around 23k, for reference.

You should mention that you are with i7 EE so that we would feel much better. :kaola: 
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January 3, 2010 4:19:05 AM

I see that the main question was answered and just to see how your i5 compared to my i7 I ran a couple Vantage cpu tests to compare.
I can't believe they ran the cpu tests with PhysX enabled since it makes hard to compare to other systems and is not allowed on any attempt of a record.

As for the difference in temp between cores on my i7 and many others I have seen it is quite common to have one core cooler than the others, on mine it is 6~8° on core 4 and core 1 is usually a couple degrees warmer also. I have had a bad mount and the difference has stayed the same just higher temps and it's always been core 1 the highest and core 4 the lowest as read by real temp.



Without HT enabled


With HT enabled
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January 3, 2010 4:26:20 AM

Update: My i5 got 34222 with 3Dmark Vantage Advance.
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January 6, 2010 8:20:33 AM

Update: My i5 got 34222 with 3Dmark Vantage Advance.
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January 6, 2010 4:09:11 PM

That's because you have an Nvidia card with PhysX enabled.
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