Question Advice Me Building My New PC with Ryzen 9 5900X

Jul 2, 2025
13
1
15
Budget: 150K BDT

1. CPU: AMD Ryzen 9 5900X
2. Motherboard: Gigabyte B550 Aorus Pro V2
3. GPU:
4. Cooler: Thermalright Phantom Spirit 120 EVO Black
5. RAM: Corsair Vengeance LPX CL16 (2×16)
6. SSD: Kingston KC3000 1 TB
7. PSU: Corsair RM750x SHIFT 80+ Gold Fully Modular ATX
8. Casing: Phanteks Eclipse P400A Digital (Basic)
9. Mouse & Keyboard: A4tech 4200N wireless Combo
10. UPS:
11: Monitor:

[Use Case: As a network system administrator, I’ll primarily be using this system for practical, hands-on networking work—running multiple virtual machines, managing dual-boot environments, and handling resource-intensive multitasking. While the use case may occasionally expand depending on the task at hand, gaming is completely off the table.]

Highly aprecaited if the experts could help me a choosing a suitable GPU, an UPS & a Monitor and could give me valuable opinions on whether these components are good and compatible with one another or if I'm bound to face any issue whatsoever. Thanks in advance for your time providing feedbacks!

Kind Regards,
Punquistador
 
Solution
For that use case practically any GPU you can find. If you want something light and practical, the old GT1030 would do. In which case the PSU is hugely overpowered, bordering on inefficiency putting such a light load on it. Quadro P1000 would be another low power option.

You should be looking for a quality 550W PSU to save some money. Though that 750W might be a decent deal all things considered. I know the SHIFT units often come in under because of their sideways cables.

UPS won't need to be too big in that case. But a lot depends on how much battery time you want. If it is just a few minutes to safely shut down, than a 750VA unit might do. 1000VA if you want a little more upgradeability.

For a monitor, I would probably go with a...
Welcome to the forums, newcomer!

Users are advised to stylize their threads with info asked of in this thread;
and the community will chime in with worthwhile suggestions. This site and the majority of it's userbase are located in the USA. Your currency tells me you're not in the USA(rather that you're in Bangladesh) and as such we'll need to know your preferred sites for purchase considering how brands and parts availability can and will vary with region. Suggesting something that you don't have access to will only lead to us going back and forth.

To add, you sure you want to invest in AM4 in 2025 given how DDR4 is being phased out entirely?

Moved thread from Components section to Systems section.
 
  • Like
Reactions: Punquistador
For that use case practically any GPU you can find. If you want something light and practical, the old GT1030 would do. In which case the PSU is hugely overpowered, bordering on inefficiency putting such a light load on it. Quadro P1000 would be another low power option.

You should be looking for a quality 550W PSU to save some money. Though that 750W might be a decent deal all things considered. I know the SHIFT units often come in under because of their sideways cables.

UPS won't need to be too big in that case. But a lot depends on how much battery time you want. If it is just a few minutes to safely shut down, than a 750VA unit might do. 1000VA if you want a little more upgradeability.

For a monitor, I would probably go with a low end 4K display? That would give you plenty of real estate for monitoring various things. If not, any cheap IPS 1080p 75hz display these days would be my recommendation.

The price gap between the 5900X and even the 5950X isn't all that big. And not much more, at least CPU cost, than the 7900X. DDR5 and an AM5 board will be more, but certainly the faster CPU and bandwidth will pay off in the end.
 
Solution
i use a 5900x myself for most of the same uses. lots of virtual machines/networks and generally as much stuff running as i can use at one time :)

i started with 32gb ram myself but ended up upping it to 64gb. your needs will depend on how much ram your vm's will need and of course how many you plan to run at one time. i started with mostly idle/light workstations that need little resources. but once you start having multiple vm's actually working, you'll want more ram for each one.

you won't need much of a gpu for office type work so i'd just grab whatever is a decent price and can handle multiple monitors you'll probably use. i had a 1650 super that only just got replaced and it was more than ample for just displaying the many screens.
 
A couple of comments:

Check to see if that shift power supply cabling is going to play well with that P400A case. I recall mine being narrow, but it has been a minute. Be watchful of graphics card length with this case as well.

Those cases, even with the improved mesh front grill have a tendency towards hot. For that CPU (or the one I am about to suggest) I would recommend an AIO front mounted and as many aux fans as you can install.
Take a look at the 5900XT, more cores, more threads, but hotter.

I would not use Corsair Vengeance on a Ryzen build. .02

Be aware that motherboard does not support 5xxx CPU out of the box. It supports (many) 3xxx on BIOS F1 and needs F10 for the 5. It appears there is a BIOS flash function button on the I/O shield.
 
Last edited:
  • Like
Reactions: Roland Of Gilead
For that use case practically any GPU you can find. If you want something light and practical, the old GT1030 would do. In which case the PSU is hugely overpowered, bordering on inefficiency putting such a light load on it. Quadro P1000 would be another low power option.

You should be looking for a quality 550W PSU to save some money. Though that 750W might be a decent deal all things considered. I know the SHIFT units often come in under because of their sideways cables.

UPS won't need to be too big in that case. But a lot depends on how much battery time you want. If it is just a few minutes to safely shut down, than a 750VA unit might do. 1000VA if you want a little more upgradeability.

For a monitor, I would probably go with a low end 4K display? That would give you plenty of real estate for monitoring various things. If not, any cheap IPS 1080p 75hz display these days would be my recommendation.

The price gap between the 5900X and even the 5950X isn't all that big. And not much more, at least CPU cost, than the 7900X. DDR5 and an AM5 board will be more, but certainly the faster CPU and bandwidth will pay off in the end.
Should I skip the GPU and go with the 7900X (AM5) and DDR5 instead?
Also, a 750W PSU is cheaper here, and no 550W units are available—otherwise, I would’ve gone for the Seasonic FOCUS GX‑550. This Corsair unit costs $55.60 after conversion.

Thanks a lot for your caring advice!
 
It is not recommended to try mixing memory. Even the exact same models will sometimes not get along. (I was unable to get 4x32GB to work on a 9950X, with 4 sticks purchased at the same time. (Best I could do was DDR5 3600 and it was unreliable at that)

Yes, that is a good point, those CPUs do have onboard video so that would solve one problem. I think that would be best. If you need a GPU later, you can always drop one in.
 
I will upgrade to 64 GB later. Will the new RAM match well with this 32 GB then?
Yes, should be fine. Just keep in mind, you are buying kits. So 2 x 16gb or 2 x 32gb. If you go with the 16gb set up, you may not simply be able to 'add' more later without potential issues on the mem. When the time comes, sell the 2 x 16gb kit and get a 2 x 32gb kit. Don't just get another 2 x 16 and add them on top. Can cause issues.
 
  • Like
Reactions: Punquistador
A couple of comments:

Check to see if that shift power supply cabling is going to play well with that P400A case. I recall mine being narrow, but it has been a minute. Be watchful of graphics card length with this case as well.

Those cases, even with the improved mesh front grill have a tendency towards hot. For that CPU (or the one I am about to suggest) I would recommend an AIO front mounted and as many aux fans as you can install.
Take a look at the 5900XT, more cores, more threads, but hotter.

I would not use Corsair Vengeance on a Ryzen build. .02

Be aware that motherboard does not support 5xxx CPU out of the box. It supports (many) 3xxx on BIOS F1 and needs F10 for the 5. It appears there is a BIOS flash function button on the I/O shield.
any issue with corsair on a ryzen build?
 
any issue with corsair on a ryzen build?

I cannot think of the word I wanted to use here, but reading on the forums indicates a lot of people discussing issues where Corsair and Ryzen are concerned. Keeping in mind that alongside that telling we don't always know what ever other unknown factors play into it.

I don't think Corsair is bad RAM or even bad branding in general (HUGE fan of their power supplies) but just passing along something we see a lot here. IMO, G Skill.

As to your post above, YES I would recommend going AM5 all day. There is nowhere else to go AM4.
 
  • Like
Reactions: Roland Of Gilead
i did not try to add another 2 x 16 when i upgraded. i went straight for 2 x 32 gb and moved the 2 x 16 kit into another build. i also did not try for fast cutting edge ram since i know ryzen can be picky at times and i did not want to fight with it.

a second note i would make is with only a single 1tb ssd. ssd's have a lot of i/o capacity but running multiple vm's plus the host OS from a single drive will start to max that out. not to mention the space needed to run the vm's. remember each vm installs it's own OS so it needs that space to work with.

i run the host OS off one drive and then i have a couple other ssd's i run the others from. data sets and such i might be working with also run off separate drives to keep things somewhat balanced. just something to consider cause once you get a lot of stuff working from the same drive, you will start seeing it slow down some as it tries to keep up with the multiple jobs asked of it.
 
  • Like
Reactions: Punquistador
Here’s my curated build list based on the valuable advice I received from you amazing people. (I don’t like RGB, by the way):
  1. CPU: AMD Ryzen 9 7900X
  2. Motherboard: MSI B650 Gaming Plus WiFi ATX (Do I really need an ATX board? Would a Micro-ATX or Mini-ITX be sufficient?)
  3. Cooler: Thermalright Phantom Spirit 120 EVO Black or Thermalright Peerless Assassin 120 SE
  4. RAM:
     – G.SKILL Trident Z5 Neo RGB DDR5-6000 32GB (2x16GB) – F5-6000J3038F16GX2-TZ5NR
     – or G.SKILL Trident Z5 RGB DDR5-6000 32GB (2x16GB) – F5-6000U3636E16GX2-TZ5RS
    (I couldn’t find non-RGB options except from Corsair.)
  5. SSD: Kingston KC3000 1TB
  6. PSU: Corsair RM550x 80+ Gold Fully Modular ATX
    (Do I actually need a 750W PSU instead?)
  7. Case: Phanteks Eclipse P400A Digital (Basic)
  8. Mouse & Keyboard: A4Tech 4200N Wireless Combo
    (Would a separate mouse and keyboard be better than a combo?)
  9. UPS: MARSRIVA MR-UF750 750VA Smart Line-Interactive UPS
    (Is a 1000VA UPS necessary? I mainly want protection from sudden power outages. Or is a UPS unnecessary?)
  10. Monitor: Asus VP229HF 21.45" FHD IPS, 100Hz, Eye Care, Gaming Monitor
Notes:
  • I'm skipping a dedicated GPU for now.
  • 64GB DDR5 RAM is too expensive and mostly unavailable in my country, so I’m sticking with 32GB for now.

How’s the build looking now? Thanks again, everyone!
 
Last edited:
In my opinion you should go with 64 GB RAM (2X32 GB, not 4X16 GB) from the beginning. But that's just the way I see it, you do whatever is best for you. It does seem like it's kinda hard to find 64 GB RAM kit in some of those stores. Maybe you have to order one from abroad.
Also might be better to purchase from more than one place, because some things are available in one, but others elsewhere. I put two RAM kits just so as to have an idea about the total price. Same with the ups, case and the monitor. This is just to get an idea, i'm not saying buy this system!

 
  • Like
Reactions: Punquistador
In my opinion you should go with 64 GB RAM (2X32 GB, not 4X16 GB) from the beginning. But that's just the way I see it, you do whatever is best for you. It does seem like it's kinda hard to find 64 GB RAM kit in some of those stores. Maybe you have to order one from abroad.
Also might be better to purchase from more than one place, because some things are available in one, but others elsewhere. I put two RAM kits just so as to have an idea about the total price. Same with the ups, case and the monitor. This is just to get an idea, i'm not saying buy this system!

Thanks a lot man. Appreciated
 
Here’s my curated build list based on the valuable advice I received from you amazing people. (I don’t like RGB, by the way):
  1. CPU: AMD Ryzen 9 7900X
  2. Motherboard: MSI B650 Gaming Plus WiFi ATX (Do I really need an ATX board? Would a Micro-ATX or Mini-ITX be sufficient?)
  3. Cooler: Thermalright Phantom Spirit 120 EVO Black or Thermalright Peerless Assassin 120 SE
  4. RAM:
     – G.SKILL Trident Z5 Neo RGB DDR5-6000 32GB (2x16GB) – F5-6000J3038F16GX2-TZ5NR
     – or G.SKILL Trident Z5 RGB DDR5-6000 32GB (2x16GB) – F5-6000U3636E16GX2-TZ5RS
    (Suggest me a decent non-RGB RAM. I couldn’t find non-RGB options except from Corsair.)
  5. SSD: Kingston KC3000 1TB
  6. PSU: Corsair RM550x 80+ Gold Fully Modular ATX
    (Do I actually need a 750W PSU instead?)
  7. Case: Phanteks Eclipse P400A Digital (Basic)
  8. Mouse & Keyboard: A4Tech 4200N Wireless Combo
    (Would a separate mouse and keyboard be better than a combo?)
  9. UPS: MARSRIVA MR-UF750 750VA Smart Line-Interactive UPS
    (Is a 1000VA UPS necessary? I mainly want protection from sudden power outages. Or is a UPS unnecessary?)
  10. Monitor: Asus VP229HF 21.45" FHD IPS, 100Hz, Eye Care, Gaming Monitor
Notes:
  • I'm skipping a dedicated GPU for now.
  • 64GB DDR5 RAM is too expensive and mostly unavailable in my country, so I’m sticking with 32GB for now.

How’s the build looking now? Thanks again, everyone!
 
Mini-ITX is generally more expensive, A much denser board. Micro ATX is generally the cheapest, a board with less features typically, though some nice ones are out there.

ATX Mid-towers are the cheapest as well, so getting a Micro ATX board and case kind of balances out.

UPS for anything you are doing work on is extremely wise. As for the 1000VA, that would just be a future protection against having to replace it if your power needs grow. Such as adding a GPU, for computational purposes. You could/should put other things on there too, like your modem, and your monitor if you want to see the shutdown, or have a little time to save your work manually.

Same for the 750W PSU, if you think at some point in the future you will add a 200W+ GPU, then it makes sense. If you are sticking to fairly low power GPUs, than a 550W is plenty. 5060 Ti/9060XT class cards would be just fine.
 
  • Like
Reactions: Punquistador