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What makes you say that?
Memory should be in dual channel typically.
It should be 2, 4 or 8 (or 16, or 32 etc). If he's running 5 GB, that means he has 2 x 2 GB sticks and 1 x 1 GB stick. He would get better performance with 4 GB.
Either that or he has an APU and 1 GB of memory is assigned to the GPU.
Oh can people just stop with this already. Your memory bandwidth is not greatly affected if it's single-channel. Yes, it will objectively be slower - but enough to impact gaming? In 99 out of 100 cases - no. That one special case being ArmA 3.
RAM being a power of two is not what signifies whether it's dual-channel or not, the placemen of the RAM modules on the motherboard does.
He could be using 4+1GB and it'd still be dual-channel.
@OP:
I think you're fine so long as you meet the other criterias. My game rarely goes above 3-4GB RAM
4GB + 1GB would be a mis match.
Dual channel would be faster, signficantly so, more so depending on the CPU as well.
A lot of applications benefit from RAM speed, not just gaming.
Not to mention system stability from mismatching RAM.
This is just bad advice.
And as for the 4gb / 5gb... 5gb will be better than 4gb, for gaming it really is as simple as that.
But yeah, just get a couple of 4gb sticks, I mean, they're so cheap now anyway and have 8gb running.
Come on, now you're just grasping at straws. The subject was whether it would be enough for this game - not whether it would be enough for other applications.
It is not significantly faster for games, at least not for 95% of them. People saying single channel is useless are just wannabe tech guys that heard some fancy terminology from some youtube videos.
There will be no system instability from using 5GB RAM just because it's a power of two mismatch. That is complete and utter BS and you know it.
The whole point of this though is that you said "Your PC isn't built correctly if it's running 5GB." which comes off as arrogant and extremely misinformed.
I would agree with this guy. Especially if you're planning to upgrade to Windows 10 64-bit.
I'd say nowadays 8GB of RAM is the sweet spot for your average computer.
Giving the correct building advice isn't "grasping at straws".
Do you have any idea what the QVL is?
https://dlcdnets.asus.com/pub/ASUS/mb/SocketAM4/PRIME_X470-PRO/PRIME_X470-PRO_Memory_QVL.pdf
What does that say at the bottom again?
- Purchasing single DIMMs is not recommended because compatibility cannot be guaranteed. For the best results, please ensure all memory modules are of the same version or have the same date code (D/C) from the same vendor. Check with the memory vendor to get the correct memory modules.
- Do not combine DIMMs from multiple kits—even ones of the same make and model. Mixing and matching DIMMs can result in failure to boot.
- The default DIMM frequency depends on its Serial Presence Detect (SPD), which is the standard way of accessing information from a memory module. Under the default state, some memory modules for overclocking may operate at a lower frequency than the vendor-marked value.
- The stability and compatibility of memory modules with XMP profiles that operate beyond the JEDEC memory standard are not guaranteed. The stability and compatibility of these memory modules depend on the CPU’s capabilities and other installed devices
Oh, not to do anything you said...
Do you like warranty support?
Making ♥♥♥♥ up about building a PC and ignoring standards is grasping at straws. Just because it works for you, doesn't mean you should do it, or that you are not getting issues and you simply can't correlate them to a problem with the build.
It is NOT built correctly, and mismatched RAM is a sign of a bigger problem with the user who built it. I wouldn't recommend dropping money on a high end PC game, when your system isn't built correctly.
Let's start with the basics, and enough with the "Do whatever you want, it doesn't matter" BS tech advice. You aren't helping anyone. Stop lying about it.
I also disagree, 16GB is the new sweet spot. 8GB isn't enough for the latest PC games. FFXV can use between 10 and 12 GB of RAM.
Don't do that.
Buy the correct kit for the RAM, take the 1 GB stick out. It needs to be pair correctly, it's doing more harm than good. This is a motherboard standard, that's why memory comes in kits, for stability in dual, triple or quad channel settings. Mixing DDR3 or DDR4 sticks is just bad practice, besides speed, it's unstable.
There's a reason your motherboard has a QVL. Figure out what board you have, and find supported memory. Don't just throw random sticks of memory in your system. You are introducing a lot of instability.
If you are going to game on PC, do yourself a big favour and do it correctly.