PCIe 2.0 and PCIe 3.0..

Rickodecoro

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May 8, 2014
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MB: Asus H81M-E
CPU: Intel Core i5 4460
RAM: Corsair Vengeance 1x8GB 1600Mhz
GPU: Asus STRIX R9 380 2GB
PSU: Corsair VS550

I have read specs of asus h81m-e and in there i found if this mobo only support pcie 2.0, and the question is "i lost pcie 3.0 tech in my CPU and GPU?" Thanks for quick response😉
 
Solution
Yes, that H81M-E only has a PCIe 2.0 version. However, PCIe 3.0 GPU's are backward compatible with that slot. There would be no noticeable decrease in performance using a PCIe 3.0 bus on a PCIe 2.0 slot. I will be more concerned with the H81 chipset of your motherboard, whether it was manufactured before or after that i5-4460 (Haswell-Refresh) you will get. If the motherboard was made earlier before the release of the CPU, chances are, you would need to perform a BIOS update for your 4460 to work (this means getting/borrowing another old LGA1150 CPU to run the motherboard first). But there's also a chance the CPU would work out of the box. To avoid this possible issues, might as well get an H97 chip motherboard.

Based on your...
Yes, that H81M-E only has a PCIe 2.0 version. However, PCIe 3.0 GPU's are backward compatible with that slot. There would be no noticeable decrease in performance using a PCIe 3.0 bus on a PCIe 2.0 slot. I will be more concerned with the H81 chipset of your motherboard, whether it was manufactured before or after that i5-4460 (Haswell-Refresh) you will get. If the motherboard was made earlier before the release of the CPU, chances are, you would need to perform a BIOS update for your 4460 to work (this means getting/borrowing another old LGA1150 CPU to run the motherboard first). But there's also a chance the CPU would work out of the box. To avoid this possible issues, might as well get an H97 chip motherboard.

Based on your limited parts choices, I assume you are going to use this build for gaming. An 8GB RAM would suffice as you probably won't need more than that in a very long time (unless you'll be into serious multitasking). I would suggest getting a 2x4GB to pair the 2 sticks (as the motherboard supports dual memory architecture).

For the GPU, the 4GB version of the R9 380 would be better (if your budget permits).

For the PSU, you might want to rethink the Corsair VS Series (as well as the CX and other series). They are known to be low-quality PSU's with poorly-chosen components which have issues in reliability and safety. Choose a better but affordable PSU such as Seasonic S12II-620 or M12II-620 or G550, XFX TS Series, Antec HCG or TPG Series, or EVGA SuperNova G2 Series.
 
Solution


so is that mean i dont waste my pcie 3.0 tech in my gpu and cpu? is that no drop fps in game? what about if i upgrade to mobo pcie 3.0 support?
 


what about if i upgrade my mobo to z97 chipset, is that good?
ok i need to change my RAM to 2x4GB, and my PSU.. Thanks for your help😉
 
If you upgrade to a Z97 chipset, this means you want to overclock. So, you have to upgrade your CPU as well from a locked i5 to an unlocked i5-4690k. And since you are going to overclock, you need an aftermarket CPU Cooler for that. All-in-all, you will be spending more than what you have initially thought. If you can afford it, then good. If not, then stick with the i5-4460 + H97 motherboard.

 


ok thanks sir! i think i just need to upgrade my mobo to h97 chipset with my budget, by the way thanks again😉
 


You're very welcome!