Sunday, January 29, 2023

Best CPU RAM MOBO Combo – Buying a Cheap Gaming PC

I’m going to be changing up the format a little this week. Rather than my usual specs analysis for the products in the main article I’ll be advising you on the kind of RAM and CPU you should be putting into your budget Motherboard. All of these motherboards are featured in my Best Cheap Motherboards for a Gaming PC article and all of the CPUs are mentioned in my Best Cheap CPU for a Gaming PC. Think of this as a mid-season recap, with a bonus. If you couple any of these builds with any of the GPUs in my Best Cheap GPUs for Gaming article you have all you need, bar a HDD and PSU, to run a computer. Granted without a case it’ll look a little weird but it will work. So let’s have a look at a cheap CPU RAM MOBO Combo or six.

Intel CPU RAM MOBO Combo

CPU RAM MOBO ComboFirst up is the ECS B85H3 M9. This discount LGA 1150 board is a sound investment at $30.98. The small form factor will save you a bit of cash on the case and it has most of what you need. So looking at the Best Cheap CPU For A Gaming PC 2016 – Picking A Processor article we can see quite a few CPUs that will work for the mobo. The best entry-level CPU would be the i3 4170, it’s the overclocked version of the i3 4130 which is also a good choice. The 4170 costs around $116.99 and the 4130 costs $109.99.

The RAM choice is limited to DDR3 type RAM at 1600Mhz. If you want to stick with this motherboard for more than a year then you should buy exactly that, DDR3 at 1600Mhz. The cheapest on the market is Mushkin Essentials 8GB (4gb x 2). With dual channel RAM slots you always want to fill them, it leads to faster data transfers and better stability. That RAM will get the job done and only costs you $28.99. But if you want to upgrade your board, and don’t mind sticking to DDR3 RAM you should buy G.Skill Ares Series 8GB (2 x 4GB). It has a 2400Mhz clock speed and if you put it in this mobo it will work fine, but will be throttled at 1600Mhz. Of course it’s more expensive, at $39.88, but you’ll be able to use it for longer. With DDR4 motherboards you will have to buy all new RAM, as it is not backwards compatible.

In the motherboard article I recommended two different full ATX Intel boards and one AMD board. I realize I’m sounding a bit like a broken record here, but I must reiterate, AMD builds are usually only cost-effective if you can get the parts second-hand. I only included them to increase your choices. So let’s jump right in and look at what you’ll need to run your MSI B85 G43. It costs around $82.98 and you’ll need at least a mid-tower case to put it in, but it comes fully featured, as discussed in the main article. Another LGA 1150, so you should be looking at the i3 4170 or the 4130 priced at $116.99 and  $109.99 respectively, the RAM is again limited to DDR3 at 1600Mhz.

Recommendations are the same as the micro ATX board, if you don’t intend to change motherboards in the next 12 months go for the cheaper Mushkin Essentials 8GB (4gb x 2) at $28.99. If you do, and the replacement happens to be DDR3 as well, go for the G.Skill Ares Series 8GB (2 x 4GB) at $38.99 due to its faster clock speed.

Now on to some new tech with the wonderful ASRock Z170 Pro4S. Now I’ve already gone on record saying that this is the board I intend to buy, but seriously, as an entry-level board onto the LGA 1151 chip-sets it’s a hard board to argue with. It costs around $79.99, which is lucky because the LGA 1151 CPUs for it tend to cost more than the LGA 1150s. I advised the i3-6100 as the best entry-level 1151 chip, and that is still the case at $123.95. RAM is a little different on this board, being DDR4 with a maximum clock speed of 3200Mhz. At the lower end is the G.Skill NT Series 8GB (2 x 4GB) at 2133Mhz. It doesn’t hit the top speed by any means but it’s the cheapest, at $38.99. If you want to make the most of the board you will need RAM that runs at 3200Mhz, the cheapest of which is G.Skill Ripjaws V Series 8GB (2 x 4GB) at $54.99, a sound long-term investment but not an option for the budget conscious.

This is the only Micro ATX Intel board I looked at. So your  ECS B85H3 M9 Intel CPU RAM MOBO Combo would cost between $169.96 and $187.85. Sub two hundred dollars is a pretty good price for an entry-level micro ATX rig.

With ATX boards you’ll be spending more, with the case included, so it isn’t the cheapest option, but for long-term upgrades I would advise it. An MSI B85 G43 ATX CPU RAM MOBO Combo would cost you between $221.96 and $238.97. The ASRock Z170 Pro4S CPU RAM MOBO Combo would cost $242.93 at least, and $258.93 if you go for the better RAM.


CPU RAM MOBO ComboI looked at two AMD micro ATX boards, the Gigabyte 78LMT-USB3 and the MSI 760GMA-P34. The Gigabyte costs $46.98 while the MSI costs a little more at $49.99. The boards a nearly identical, but if I had to pick one, and I think I do, I would go with the MSI board. The Gigabyte has more RAM slots, but the MSI has the SATA3 ports, which you’ll need for faster storage. CPU-wise there is really only one option. The AMD FX-4350. It’s cheap, has decent performance and it’s cheap. Really, that’s all AMD have going for them at the moment, the price. You can get the FX 4350 for as little as $89.99 in some places.

You’ll have to toss the board come December, really you’re not going to get too long with AMD before it’s too long out of date. The RAM requirements are the same as the Intel board so the Mushkin Essentials 8GB (4gb x 2) at $28.99 would be your best bet, though if you buy the Gigabyte board doubling up is an option. Don’t bother with the faster DDR3 RAM this time, as you’ll need DDR4 by the time you go to upgrade anyway.

On to the only AMD board in the ATX form factor. The Gigabyte GA-970A-DS3P which costs $56.98. My CPU recommendation is the same as the micro ATX boards, the FX-4350, at $89.99, but the RAM this time can be a little faster. It’s still DDR3 but now with a maximum clock speed of 1866Mhz, which give us a few more options. G.Skill is the go to for cheap RAM and with 1866Mhz this doesn’t change. The G.Skill Ares Series 8GB (2 x 4GB) will hit the clock speed and costs around $38.99. If you have to go with AMD at this form factor then go for the G.Skill.

So with AMD you have fewer options now and no options for upgrading. But you do have the cheaper entry-level price point, which does count for something. Your Gigabyte 78LMT-USB3 or  MSI 760GMA-P34 AMD CPU RAM MOBO Combo costs you between $165.96 and $168.97. Pretty cheap overall, and you might be able to find the parts even cheaper on eBay if you’re lucky.

There really isn’t more to it with the AMD boards. You haven’t got room to upgrade so this is at best a short-term solution. The Gigabyte GA-970A-DS3P CPU RAM MOBO Combo will cost you a mere $185.96, a significant saving in the beginning. Remember if you’re getting AMD parts go for second-hand wherever you can, because you’ll probably have to chuck it next year.


As much as it pains me to admit this, you should go with an Intel board and chip-set in the micro ATX form factor. AMD parts aren’t cheap enough to off set the power difference, and it’s only four bucks more for the cheapest Intel set up. If you can find some of the AMD parts second-hand then great, go for that and spend a little more on your GPU, but outside of that very specific scenario stick with Intel.

In the full ATX arena the numbers are a little kinder to AMD. They offer a significant saving across the board and their performance is comparable to the LGA 1150 build. I would still say go with Intel for the upgrade options, either one, but I can at least recommend the AMD build for the more budget conscious consumers.

Remember to take a look at all the articles in this series on building a budget gaming computer.

Buying Cheap Storage

Buying a Cheap CPU

Buying a Cheap GPU

Buying a Cheap Motherboard

Buying a Cheap Power Supply

Buying a Cheap Case


Barry W Stanton
Irish born writer who drinks too much caffeine and reads too much Terry Pratchett. I enjoy long walks on the server and Korean cuisine.


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