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Does a 4080 fit on older motherboard and 700 W power supply

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Hi,

when MS2020 was launched I followed the hardware recommendations and bought this system: 

Intel iCore i9-9900K 8 x 3.6 Hz
Power Supply 700 W
GPU: NVIDIA GeForce RTX 2080 Super ASUS ROG Strix 8GB 
Motherboard: ASUS ROG Strix 390-F Gaming-ATX
 

The Motherboard has these Slots for the GPU:

2xPCIe 3.0x16 (CPU)
1xPCIe 3.0x16 (PCH x4 Mode)
3x PCIe 3.0x1

Can I put in a GeForce RTX 4080 Super in this board which has:

1 x 16-pin PCIe 5.0 (or via adapter 3x8-pin PCIe 5.0)

???

I allready was told that PCIe 5.0 is compatible with PCIe 3.0 (performance difference neglectable).

And is the 700W power supply strong enough for the GeForce 4080?

Thanks 🙂
 

 

 

Intel i9-14900K, 64 GB RAM, MB ASUS ROG STRIX 790-E, NVIDIA GTX 4080 Super 16GB, 2 x 2 TB M.2, BE QUIET Pure Power 12 M 1000W, BE QUIET Silent Loop 3 360 AIO, BE QUIET Dark Base Pro 901, 4K-Monitor, Honeycomb Bravo Throttle Quadrant, Thrustmaster TCA Yoke, Streamdeck XL, Thrustmaster T.16000M Joystick, Saitek Rudder Pedals, WINCTRL PAP3, WINCTRL 3M PDC, JetMax 737 home cockpi

First, Nvidia recommends a 750 watt PSU as the minimum and you really want more than 750 watts just to be safe.  Second, a big limiting factor with the 3xxx and 4xxx cards is the length available within the computer case.

My computer: ABS Gladiator Gaming PC featuring an Intel 10700F CPU, EVGA CLC-240 AIO cooler (dead fans replaced with Noctua fans), Asus Tuf Gaming B460M Plus motherboard, 16GB DDR4-3000 RAM, 1 TB NVMe SSD, EVGA RTX3070 FTW3 video card, dead EVGA 750 watt power supply replaced with Antec 900 watt PSU.

I think 700W Is enough if you doesn't have a lot of extra gadgets and hard drives that take power, especial if you undervolt your 4080, which you should do anyway, but don't count to get more fps because your CPU will be bottleneck in your system, but you will be able to use Ultra settings (except T-Lod) with the same fps as you have with your 2080 today.

System: I ASRock X670E | AMD 7800X3D | 64Gb DDR5 6000 | RTX 4090 | 2TB NVMe | Seasonic Vertex 1000W I LG Ultra Gear 34 UW I

  • Author

Thanks everybody for the advice!

Intel i9-14900K, 64 GB RAM, MB ASUS ROG STRIX 790-E, NVIDIA GTX 4080 Super 16GB, 2 x 2 TB M.2, BE QUIET Pure Power 12 M 1000W, BE QUIET Silent Loop 3 360 AIO, BE QUIET Dark Base Pro 901, 4K-Monitor, Honeycomb Bravo Throttle Quadrant, Thrustmaster TCA Yoke, Streamdeck XL, Thrustmaster T.16000M Joystick, Saitek Rudder Pedals, WINCTRL PAP3, WINCTRL 3M PDC, JetMax 737 home cockpi

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