Only 7,9GB out of 16GB RAM usable? + i7 3770 vs i5 4690

[Ilegator]

I had a R7 2700 which didn't work (PC would't boot) because it had two broken pins. I fixed it soldering two new pins.

I tested it two mobos and in both cases I only have 7,9GB usable RAM. However, it still gets dual channel.

Overall it works just fine. Is there anything I can try? Thank you!

 

PD: which CPU is better for gaming? i7 3770 (non K) or i5 4690 (non K).

 

I used this ram: Corsair Vengeance LPX DDR4 3000 2x8GB CL15

Tested in Gigabyte GA-A320M-S2H V2 (updated BIOS) and Bazooka V2 (unupdated BIOS).

[Ichoumaz]

3 minutes ago, Ilegator said:

I had a R7 2700 which didn't work (PC would't boot) because it had two broken pins. I fixed it soldering two new pins.

I tested it two mobos and in both cases I only have 7,9GB usable RAM. However, it still gets dual channel.

Overall it works just fine. Is there anything I can try? Thank you!

 

PD: which CPU is better for gaming? i7 3770 (non K) or i5 4690 (non K).

 

I used this ram: Corsair Vengeance LPX DDR4 3000 2x8GB CL15

Tested in Gigabyte GA-A320M-S2H V2 (updated BIOS) and Bazooka V2 (unupdated BIOS).

try and redo the soldering, and recheck the other pins and see if the arent any other bent or missing pins

[Dabombinable]

Do that^ and also check the back of the motherboard for damage. Mine has damage on the back so as a result, its stuck in with 2 slots working, and those in single channel (luckily the RAM overclocks to  2200MHz).

6 minutes ago, Ilegator said:

I had a R7 2700 which didn't work (PC would't boot) because it had two broken pins. I fixed it soldering two new pins.

I tested it two mobos and in both cases I only have 7,9GB usable RAM. However, it still gets dual channel.

Overall it works just fine. Is there anything I can try? Thank you!

 

PD: which CPU is better for gaming? i7 3770 (non K) or i5 4690 (non K).

 

I used this ram: Corsair Vengeance LPX DDR4 3000 2x8GB CL15

Tested in Gigabyte GA-A320M-S2H V2 (updated BIOS) and Bazooka V2 (unupdated BIOS).

The i7 3770 by far.

[Ilegator]

Just now, Ichoumaz said:

try and redo the soldering, and recheck the other pins and see if the arent any other bent or missing pins

All the pins are fine and straight. I don't know if it's worth the risk to redo the soldering. 

[Ichoumaz]

1 minute ago, Ilegator said:

All the pins are fine and straight. I don't know if it's worth the risk to redo the soldering. 

depends, do you need more that 8 gigs of ram?

if not and you are afraid of messing it up and breaking it, then its probably best to keep it like that and try to resell it