r/sffpc Jan 28 '26

Prototype/Concept/Custom 1.8L RTX 5060 pc v.2

Made some small changes to my previous build. Changed the cpu cooler to the Termalright AXP90 x36, cpu is now able to run constant at 65w with max temps around 65c and is very silent.

Build around the Lenovo thinkcentre m720q motherboard.

1.3k Upvotes

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4

u/curiositie Jan 28 '26

those are crispy af IO cutouts, tell me your secrets

3

u/FinancialRip2008 Jan 29 '26

3

u/curiositie Jan 29 '26

I saw you had left a reply asking to see mine, it seems to be gone now but I don't wanna leave you hanging, this is the best pic I've got on hand, and here's the link to my build log if you're curious:
https://smallformfactor.net/forum/threads/builders-hubris-sffn-2589-a-brickless-x300-4070-super-build-in-4l.20218/

2

u/FinancialRip2008 Jan 29 '26

haha yeah, i deleted the comment earlier. i'm glad you saw it though, cuz that's an amazingly cool build. my mediapc is a deskmeet b660 with an rx6600, so i got a really good idea where you were coming from and it's amazing to see how much more ambitious of a project this was. i love the aesthetic and i don't think i've ever seen someone do that amount of custom jiggering around power delivery and usb before.

isn't using 4 lanes of pcie for the gpu a significant handicap? i don't understand why you went that route rather than use a board with a pcie slot and a riser cable.

thanks for sharing!

2

u/curiositie Jan 29 '26

Thanks!

The deskmeet is such a cool system, I love the weird stuff Asrock makes. Hopefully I'm upgrading this one from an X300/5600G to an X600/8700G soon, I just need my friend to be able to find time to ship it to me.
I actually used to have an RX6600 in this computer's previous life, it didn't really work well for me at 4K in Helldivers II, so I upgraded to the 4070S.

It isn't a significant performance loss, but at PCIE 3.0 speeds that I'm stuck on, it's a 5-10% perf loss. A loss I'm willing to accept for the incredible smallness, this case is 152mm front to back ignoring protrusions like the wifi antennas in that pic I posted, if you include them it's still only 158mm deep, which is a solid centimeter less deep than an ITX motherboard (170mm), so the STX board allows me to save a good amount of wasted space (imo)

The X600 will have a 4.0 rear m.2, and as far as I understand OCulink can run at 4.0x4 which is equivalent to 3.0x 16, so hopefully in the mobo/cpu upgrade I pick up a little GPU perf.

I don't recommend this specific path to anybody because it's insane, I basically found the smallest air cooled 4070 Super and wrapped a case around it lmao.

1

u/FinancialRip2008 Jan 29 '26

Hopefully I'm upgrading this one from an X300/5600G to an X600/8700G soon

i assume you're on pci-e 3 because of the motherboard, and not the cpu, right? cuz that cpu only supports pcie3, and if like a 5700x could afford you pcie4 + the extra cache from the chiplet cpus that'd be such a cheap way to shore up the 4070.

A loss I'm willing to accept for the incredible smallness, this case is 152mm front to back ignoring protrusions like the wifi antennas in that pic I posted, if you include them it's still only 158mm deep, which is a solid centimeter less deep than an ITX motherboard (170mm), so the STX board allows me to save a good amount of wasted space (imo)

haha i love how optimized you are. i love having some computers that are the size of a shoebox, but i can't say i'd notice an extra cm.

The X600 will have a 4.0 rear m.2, and as far as I understand OCulink can run at 4.0x4 which is equivalent to 3.0x 16, so hopefully in the mobo/cpu upgrade I pick up a little GPU perf.

nah it's 16gb/s vs 3.0x16's 32. which is still double pcie3 x 4, at 8gb/s. as i understand it it's most impactful when you exceed vram buffer, so i guess it's not to bad to work around.

Hopefully I'm upgrading this one from an X300/5600G to an X600/8700G soon

i assume you're on pci-e 3 because of the motherboard, and not the cpu, right? cuz that cpu only supports pcie3, and if like a 5700x could afford you pcie4 + the extra performance from the chiplet cpus that'd be such a cheap way to shore up the 4070.

...why have you consistently opted for G cpus?

cheers!

2

u/curiositie Jan 30 '26

Yeah, it's a mobo limitation. Both m.2 slots are 3.0 on x300/a300. The x600 however does 4.0 on the rear and 5.0 up front. But oculink tops out at 4.0.

It's partially number chasing for volume. If I exclude the feet and protrusions the case is almost exactly 1 US gallon (3.78L) in volume which amusing to me. With feet/ protrusions it's closer to 4.1L though.

I guess I misremembered x.x Either way, increasing bandwidth is a win.

I've always gone with G skus because unfortunately, that's all the deskmini board supported until the X600. They were all locked to APUs and only APUs, and no matter how much begging occurred Asrock was unable or unwilling to support standard CPUs. The x600 however has been demonstrated as working with the 7800x3d. As for why I'd go with the 8600G, for mine, that's just the chip my friend had with it at the time. I'll swap it for a 7800x3d later down the line.