Your 265w PSU won't have any trouble powering a 75w card. I suggest the GTX 1050 over the ti version. With the GTX 1050 ti, your CPU will bottleneck it some. Your CPU is already the max within specs for the 390.
I've relied on the YouTube videos myself. Many of Dell's printed specs back to the time of mfr. for the generation your 390 is dictate certain model sizes with certain PSU's can't power 75w cards. However, when specs. are successfully exceeded, Dell doesn't update. Probably to many manuals and tech guides to reprint, though there's the internet. Dell's 240w-290w PSU's have been successfully powering 75w cards according to many YouTubers for years.
8GB is the max listed RAM for 390. If that can be exceeded, I'll let you research. Something like "390 16GB ram" in Dell Community search bar. Or check Google, ebay, newegg, to see if any are sold with 16GB RAM. The generation your 390 is from has a habit of exceeding RAM specs.
Screengrabs below:
GT 1030 is 30w. You might have to check your games' requirements. Naturally, the 1050 is better than the 1030.
When checking bottleneck, I let the default go to 1080p. If you run a different resolution, you can always check or have me check.
First, a clarification on my part: ""The generation your 390 is from has a habit of exceeding RAM specs.". More accurately, some, not all, models from that generation can exceed RAM specs.
Anything above a GTX 1050 and your CPU will bottleneck it. The 75w 1650 wouldn't require a PSU upgrade. You could still run it, but be aware of potential bottleneck.
If you ran a 120w GTX 1650 SUPER, then you'd have to upgrade PSU. However, your CPU would bottleneck it even worse.
With Optiplex's being commercial quality business machines, they only take so much game upgrading, but at least take some.
bradthetechnut
7 Technologist
•
9.4K Posts
0
January 24th, 2021 18:00
Optiplex 390 Tech Guide
Your 265w PSU won't have any trouble powering a 75w card. I suggest the GTX 1050 over the ti version. With the GTX 1050 ti, your CPU will bottleneck it some. Your CPU is already the max within specs for the 390.
I've relied on the YouTube videos myself. Many of Dell's printed specs back to the time of mfr. for the generation your 390 is dictate certain model sizes with certain PSU's can't power 75w cards. However, when specs. are successfully exceeded, Dell doesn't update. Probably to many manuals and tech guides to reprint, though there's the internet. Dell's 240w-290w PSU's have been successfully powering 75w cards according to many YouTubers for years.
8GB is the max listed RAM for 390. If that can be exceeded, I'll let you research. Something like "390 16GB ram" in Dell Community search bar. Or check Google, ebay, newegg, to see if any are sold with 16GB RAM. The generation your 390 is from has a habit of exceeding RAM specs.
Screengrabs below:
GT 1030 is 30w. You might have to check your games' requirements. Naturally, the 1050 is better than the 1030.
When checking bottleneck, I let the default go to 1080p. If you run a different resolution, you can always check or have me check.
bradthetechnut
7 Technologist
•
9.4K Posts
0
January 24th, 2021 18:00
I couldn't resist checking Amazon for a 390 with 16GB RAM, didn't take me long to find one: https://www.amazon.com/Dell-Optiplex-390-Computer-Bluetooth/dp/B08SBKR8KG/ref=mp_s_a_1_4?dchild=1&keywords=optiplex+390+16gb+ram&qid=1611542169&sr=8-4
sulaiman
2 Posts
0
January 25th, 2021 00:00
But what about the gtx 1650 ? Will it be compatible? Let's say i changed the power supply
bradthetechnut
7 Technologist
•
9.4K Posts
0
January 25th, 2021 09:00
First, a clarification on my part: ""The generation your 390 is from has a habit of exceeding RAM specs.". More accurately, some, not all, models from that generation can exceed RAM specs.
Anything above a GTX 1050 and your CPU will bottleneck it. The 75w 1650 wouldn't require a PSU upgrade. You could still run it, but be aware of potential bottleneck.
If you ran a 120w GTX 1650 SUPER, then you'd have to upgrade PSU. However, your CPU would bottleneck it even worse.
With Optiplex's being commercial quality business machines, they only take so much game upgrading, but at least take some.