Will all these components fit and work perfectly fine in my Case?

ModernKamikaze

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what exactly are mounting holes, are they where you put the stand-offs, if so how many are there for mATX?
 


I think he will be OK. It looks like the asrock motherboard is a shortened version of a M-ATX motherboard.
What holes there are looks to match to the necessary mounting places on the HP motherboard.

Sometimes, oem pc's come with non standard power supplies.
It might be worth it to check the dimensions of the current psu. The length does not matter, but the width and height should be atx standard which is 5.9" x 3.4"
 

ModernKamikaze

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my dimensions of my Bestec 250w PSU: 5.9 W x 3.4 H x 5.5 D - Inches
 

ModernKamikaze

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what's sdram?
Also I think I should just stick with 4gb since I am not doing any hardcore gaming, just moderate.
But I really will look into 8gb. :)
 


SDRAM stands for synchronous dynamic random access memory.

Windows 7 64 bit takes up a bit more ram than 32 bit.

No single game will use more than 2-3gb, but having extra reduces interference if you will be doing any sort of multitasking.
Here is a study on the value of 4gb vs. 8gb:
http://www.corsair.com/blog/an902-8gb-or-more-of-system-ram-doing-more-with-more-memory/
 

ModernKamikaze

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It doesn't say there my MB is compatible

Compatible M/B Chipset:

Intel P55
lntel H55
Intel X48
Intel P45
Intel X38
AMD 890 Series
AMD 790 Series
 


Good job on checking.
The motherboard qvl lists may not get continuously updated with all the compatible ram kits.
And similarly, the ram kits may not get updated with all the possible motherboards that are compatible.
Still, I would always go with a ram kit thet either the motherboard vendor or the ram vendor says is compatible.
If there should ever be a problem, you will get support from somebody, and no finger pointing.
In this case, 8gb is supported by KVR1333D3N9H/8G
http://www.newegg.com/Product/Product.aspx?Item=N82E16820139984&Tpk=KVR1333D3N9H%2f8G

Here is the full list of supported ram for your motherboard:
http://www.asrock.com/mb/memory.asp?Model=H61M-DGS
 

I have done a couple of them and the connections/pins are all written by the motherboard connectors so it is a matter of comparing and marking wires as you unplug!