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AMD Pcie Bus, Real world test.

post #1 of 8
Thread Starter 
I have no idea if im in the right forum. but i was tinkering today and i wanted to know what the effect would be on the video card if i went to X8 vs X16. also wanted to confirm something about the PCIE buss clock. So i ran some realworld tests on my mediocer system. Thought you might be intrested in the results. Feel free to ignore me if you prefer though
My curent system specs are 4.004ghz, amd Hexcore. 4gig ddr3 @ 565.3 Radeon 5870 (stock at 850mhz 1200Mem, cant overclock it to save my life ) dual 10krpm 300gig western digital drives, on a m4a78t-e asus mother board. The tests were run with my personal prefrences at these values, in 3dmark 11
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post #2 of 8
If you had a SATA drive, you could've seriously corrupted your data! PCI-E clock is also SATA controller clock. Push it too far and things can become unstable. differences are usually small.
post #3 of 8
Quote:
Originally Posted by xd_1771 View Post
If you had a SATA drive, you could've seriously corrupted your data! PCI-E clock is also SATA controller clock. Push it too far and things can become unstable. differences are usually small.
ikr
post #4 of 8
Quote:
Originally Posted by SpeedNuggeT View Post
ikr
I would leave the PCIE bus speed alone. Not much of a gain, and you can potentially corrupt your data.

BUT, thanks for trying it out and posting data!
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post #5 of 8
Quote:
Originally Posted by Biscuits_N_Gravy View Post
I would leave the PCIE bus speed alone. Not much of a gain, and you can potentially corrupt your data.

BUT, thanks for trying it out and posting data!
lol it wasn't me it was the OP
post #6 of 8
Quote:
Originally Posted by SpeedNuggeT View Post
lol it wasn't me it was the OP
Ah, quoted the wrong post! lol
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post #7 of 8
Thread Starter 
Quote:
Originally Posted by Biscuits_N_Gravy View Post
I would leave the PCIE bus speed alone. Not much of a gain, and you can potentially corrupt your data.

BUT, thanks for trying it out and posting data!
No problems I had honestly done alot of research as to why and why not to overclock the PCIe. But the problem i had was there was never any data. I wasent woried about corupting my data and during the tests i only used the benchmark program. Worst case scenerio id restore from one of the myriad of backups i keep (Im parinoid after loosing the aray twice due to physical failure.)

Overclocking is always a risk though and i understand that, and im not a master at computers. I consider myself a expert but most of the people here i would consider masters *bows* which is in a whole other leage. And overclocking i dont claim to know alot. Everything i know has been through research and experimentation. Basicaly poking at it and seeing what happens

I was more intrested in this test, and why i did this test, was the diffrence in real world between X8 and X16 on the PCIe. Mostly because i want to add another 5870 and crossfire them, but the second slot is only X8. So in comparision with the single card you can see theres honestly not alot of diffrence between X8 and X16, so i should still get a performance boost from crossfire, not quite as much if i had a good motherboard but the board was a gift so not going to complain.

Anyways im babbling mostly, i just thought youd guys be intrested in actual hard data on the effects. Though now that you have pointed out it controls the SATA controler, its got me curious if it effects the transfer rate of the Hard drives. I may do a test on that too for curiosity But if it makes you feel better i did after the tests drop the speed back to standard. It was just for the tests that i did the overclock.

Take care, and as always i welcome any tips you guys have. Like i said I R Newb when it comes to overclocking

Wyrinn
Leader MacrossPlus
post #8 of 8
Quote:
Originally Posted by Wyrinn View Post
No problems I had honestly done alot of research as to why and why not to overclock the PCIe. But the problem i had was there was never any data. I wasent woried about corupting my data and during the tests i only used the benchmark program. Worst case scenerio id restore from one of the myriad of backups i keep (Im parinoid after loosing the aray twice due to physical failure.)

Overclocking is always a risk though and i understand that, and im not a master at computers. I consider myself a expert but most of the people here i would consider masters *bows* which is in a whole other leage. And overclocking i dont claim to know alot. Everything i know has been through research and experimentation. Basicaly poking at it and seeing what happens

I was more intrested in this test, and why i did this test, was the diffrence in real world between X8 and X16 on the PCIe. Mostly because i want to add another 5870 and crossfire them, but the second slot is only X8. So in comparision with the single card you can see theres honestly not alot of diffrence between X8 and X16, so i should still get a performance boost from crossfire, not quite as much if i had a good motherboard but the board was a gift so not going to complain.

Anyways im babbling mostly, i just thought youd guys be intrested in actual hard data on the effects. Though now that you have pointed out it controls the SATA controler, its got me curious if it effects the transfer rate of the Hard drives. I may do a test on that too for curiosity But if it makes you feel better i did after the tests drop the speed back to standard. It was just for the tests that i did the overclock.

Take care, and as always i welcome any tips you guys have. Like i said I R Newb when it comes to overclocking

Wyrinn
Leader MacrossPlus
Honestly you wouldn't notice a difference in game if you had 16x, 4x with PCIE2.0. Wouldn't worry about it.
     
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