First PC Build Reccommendations

[natunator]

Budget (including currency): 1.7 Lacs / 1800 USD

Country: India

Games, programs or workloads that it will be used for: 
Games like Forza Horizon 6, Horizon I & II, Wukong, upcoming Witcher 4, Assassins creed, Marvel Rivals. (Majority workload - 4K/60 for cinematic AAA, 1440p high-refresh for competitive)
Workloads involve CAD modelling (Fusion and SOLIDOWRKS mostly), ANSYS (light work and occasional) and Blender 3D  (Bit heavy on rendering but also occasional).
Bit of ROS-related work & software dev as well, but planning to dual boot with Linux for that.

Other details (existing parts lists, whether any peripherals are needed, what you're upgrading from, when you're going to buy, what resolution and refresh rate you want to play at, etc): 
RAM - ZGJOLONG 8×2 DDR5-6000 C28 A-die (Hoping to upgrade & buy 2 more exact same sticks when prices go down)
SSD - Kioxia SF10 2TB NVMe (Owned) - 220 USD
CPU + Mobo - R7 7800X3D + Colorful B850M WiFi7
GPU - Vastarmor RX9070XT Starry Sky
PSU - Thermalright TR-SP850 Platinum
Monitor - AOC U27G4XM 4K 144Hz Mini LED (Owned) - 325 USD
Keyboard - Monsgeek Fun60 Max(Owned) - 30 USD
Mouse - VXE R1 Nearlink(Owned) - 12 USD
Case - CM Elite 481 Wood (Owned) - 55 USD
Cooler - Thermalright PA120 Digital ARGB(Owned) - 26.15 USD

Note :

- I do buy a lot of components from China (taobao/Tmall/physical store) where I go for work every few months. Majority of this rig has been designed considering Chinese companies, vendors and current pricing. Headed to China in May first week, and aiming to buy all the pending stuff then.

NEW to this forum as well by the way, open to  any and all advice and recommendations.

[Why_Me]

That looks to be a decent build other than I would look for a set of 2x16GB so that you are only running two sticks of RAM.

[natunator]

- Yeah, current prices for 1X16 GB stick is more than 2X8, which are already high enough. Would it be fine to just buy single 16GB stick and buy another later ? Would single channel vs. dual channel make a big difference in performance for games ?
- Also 9070XT is a bit pricey for my budget. Would 7900XT or 9070 be good enough ? Those two are cheaper than 9070XT.

[Dedayog]

7 minutes ago, natunator said:

- Yeah, current prices for 1X16 GB stick is more than 2X8, which are already high enough. Would it be fine to just buy single 16GB stick and buy another later ? Would single channel vs. dual channel make a big difference in performance for games ?
- Also 9070XT is a bit pricey for my budget. Would 7900XT or 9070 be good enough ? Those two are cheaper than 9070XT.

I'd personally grab 1x16GB DDR5 vs 2x8GB.  Add another 16GB stick later, for 32.

 

With DDR5, you don't lose much going 1 stick as that single stick can be dual channel by itself if what I read is true...

 

Single Stick vs. Dual Channel RAM: How Much Performance Do You Actually Lose? | TechSpot

 

[Why_Me]

26 minutes ago, natunator said:

- Yeah, current prices for 1X16 GB stick is more than 2X8, which are already high enough. Would it be fine to just buy single 16GB stick and buy another later ? Would single channel vs. dual channel make a big difference in performance for games ?
- Also 9070XT is a bit pricey for my budget. Would 7900XT or 9070 be good enough ? Those two are cheaper than 9070XT.

9070 will work fine.

[podkall]

2 hours ago, Dedayog said:

I'd personally grab 1x16GB DDR5 vs 2x8GB.  Add another 16GB stick later, for 32.

 

With DDR5, you don't lose much going 1 stick as that single stick can be dual channel by itself if what I read is true...

 

Single Stick vs. Dual Channel RAM: How Much Performance Do You Actually Lose? | TechSpot

 

I'm not sure single stick can be dual channel, what it can be is dual rank.

 

Which aren't same things:

 

[natunator]

I am planning to buy a single 16GB stick for now, and get another one later ones prices drop. But I can't guarantee I will get the exact same RAM stick later. If I get another stick which is a different die (M-die, A-die etc.) or a different CL timings values like C28/C30/c32 etc, how much of an impact would that make on my system ?

 

[dark_globe]

how much performance loss will you experience heavily depends on what games will you be playing also .
for example 9700x is loosing 35% of its performance in marvel rivals , but in some other games it´s just 5% (but that´s with rtx 5090) .
lucky for you X3D chips are less sensitive to single stick vs dual channel due to massive cache compared to regular CPUs
- so you should be totally fine with a single stick for now .

 

On 4/8/2026 at 9:27 AM, natunator said:

But I can't guarantee I will get the exact same RAM stick later. If I get another stick which is a different die (M-die, A-die etc.) or a different CL timings values like C28/C30/c32 etc, how much of an impact would that make on my system ?

 

ideally you should try to find the stick with the same specs from the same manufacturer .
but even if you don´t there is still a pretty good chance it will work in dual channel 
the faster memory module of the two should adjust and sync its speed and timings with the slower stick -
(or they both work at default DDR5 speed)
usually it either works from the get go or it doesn´t work at all ...
after you verify that the dual channel is working at synced default speeds
you can go from there and try to set EXPO profile and see if it works .