Is my RAM compatible with my Motherboard?

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liam59556

May 28, 2018
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0
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Hey there,

I was wondering whether my 2x4gb of ram I bought was compatible with my computers Motherboard or whether only 1 of them will be able to be used. I currently already have 2gb of ram inside my computer. And if it were to work what would I need to do to install it, after I put it in?
Also, can you recommend any RAM that I should buy if necessary?
The Ram I bought were 2x4gb 1Rx8 PC3-12800-11 -12-A1 Samsung Sticks both DDR3
My Computer Specs are as follows: HP Pavillion p6325a
This has been modified slightly. Added GPU Rx470 and 500V Power Supply
MB: MS-7613 (Iona-GL8E)
CPU: Intel Core i3 540
RAM installed ATM: 2x2gb
According to this, I might need this RAM instead: Memory upgrade information:
'Supports DDR3 DIMMs only
Dual channel memory architecture
Four DDR3 DIMM (240-pin) sockets
DIMM types:
PC3-10600 (DDR3-1333)
PC3-8500 (DDR3-1066)
Non-ECC memory only, unbuffered
Supports up to 16 GB on 64-bit PCs
Maximum memory only if using 4GB DDR3 DIMM modules'

Specifications: https://support.hp.com/us-en/product/hp-pavilion-p6300-desktop-pc-series/4079858/model/4184718/document/c02072590

If I've missed any stats, let me know

Thanks In advance
 
Solution
B
The system supports 4 GB DDR3 memory modules that are dual ranked. Single rank 4 GB memory modules will not (or should not) work.

The Samsung 4 GB 1Rx8 modules are single rank (1R) and will not work. You want dual rank memory modules (2Rx8) instead.
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brispuss

Splendid
Dec 27, 2014
2,607
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26,490
The system supports 4 GB DDR3 memory modules that are dual ranked. Single rank 4 GB memory modules will not (or should not) work.

The Samsung 4 GB 1Rx8 modules are single rank (1R) and will not work. You want dual rank memory modules (2Rx8) instead.
 
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Solution
B

brispuss

Splendid
Dec 27, 2014
2,607
26
26,490
According to the specifications for the i3-540 integrated memory controller, the IMC supports up to 2 Gb (Giga bit) memory chips. That means in order to run 4 GB memory modules, sixteen 2 Gb (at 8 bit data) memory chips will have to be used.

So, 16 chips x 2 Giga bits = 32 Giga bits. This is equivalent to 32 Giga bits ÷ 8 bits = 4 Giga bytes = 4 GB.

Since 16 memory chips at 8 bit data, then total bits = 16 x 8 = 128 bits.

But one rank of memory uses 64 bits, so total number of ranks = 128 bits ÷ 64 bits = 2 ranks.

Single rank 4 GB memory modules requires using eight 4 Gb memory chips (at 8 bit) -> 8 chips x 4 Gb ÷ 8 bits = 4 GB. And ranks used is 8 chips x 8 bits ÷ 64 bits = 1 rank.

So in order to run single rank 4 GB memory modules, it requires the IMC to support 4 Gb memory chips which the i3-540 does not support according to specifications. So single rank 4 GB modules shouldn't work.

Can someone using a i3-540 can positively confirm whether single rank 4 GB modules work or not? If single rank 4 GB memory modules do work using an i3-540 CPU then that contradicts the published specifications!?
 
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