The Best $3000 Extreme Mini-ITX Gaming PC Build

On the same AM5 socket, it is the way into X3D gaming for less.

The Ryzen 7 7800X3D brings 8 cores and 16 threads, a 5GHz maximum boost, 96MB of L3 cache and a 120W rating, and it accounts for 12% of the parts total. It ships without a cooler, so the build pairs it with the Frozen Notte 240. Its integrated graphics stay available as a backup display output.

The Ryzen 7 7800X3D uses the AM5 socket and the B850I Edge TI board uses AM5, so the processor seats in the board directly. Read the board's CPU support list for the BIOS version this chip needs. The B850I Edge TI takes DDR5 and the Ryzen 7 7800X3D supports DDR5, so the Trident Z5 RGB White kit in DDR5 is the matching type. DDR4 and DDR5 sticks are keyed differently, so the wrong type will not seat. AM5 appears in the Frozen Notte 240's supported sockets (AM5, AM4, Intel), so the bracket for the Ryzen 7 7800X3D comes in its box. To spend less, the Ryzen 7 8700G is 8 cores against 8, roughly 25% cheaper than the Ryzen 7 7800X3D; the socket, memory and cooler checks still pass.

On the spec sheet, it offers a 16GB video memory and offers a 306mm card length.

16GB of GDDR7, the RTX 5070 Ti chip, a 2.5-slot cooler, a 306mm length and 16-pin 12V-2x6 power come with the ASUS Prime, which takes 42% of the parts total, more than any other part. For the supply, the maker's guidance for this chip is 750W.

The ASUS Prime is listed at 306mm and the A3-mATX takes cards up to 415mm, which leaves 109mm before a front fan or radiator. For an RTX 5070 Ti card the recommended supply is 750W, and the NZXT C1000 Gold Core offers 1000W, a margin of 250W above that figure. The ASUS Prime lists 16-pin 12V-2x6, and the NZXT C1000 Gold Core lists one 12V-2x6 connector, so match the cable to the card's socket. To spend less, the ASRock RX 9070 XT Steel Legend is the RX 9070 XT with 16GB of GDDR6, against the RTX 5070 Ti's 16GB, roughly 27% cheaper than the ASUS Prime; the supply wattage and case length rows stay green.

It also offers a 2 M.2 slot count and offers a 5Gbps wired network speed.

AM5 is the socket on the B850I Edge TI, a board with Mini-ITX size, 2 M.2 slots, Wi-Fi 7 and 5GbE LAN that accounts for 9% of the parts total; its memory slots accept DDR5 and nothing else.

The Ryzen 7 7800X3D uses the AM5 socket and the B850I Edge TI board uses AM5, so the processor seats in the board directly. Read the board's CPU support list for the BIOS version this chip needs. The B850I Edge TI takes DDR5 and the Ryzen 7 7800X3D supports DDR5, so the Trident Z5 RGB White kit in DDR5 is the matching type. DDR4 and DDR5 sticks are keyed differently, so the wrong type will not seat. The B850I Edge TI lists 2 M.2 slots, so the SN7100X 2TB has a home and a second drive can follow. The manual says which slot runs at full PCIe speed.

You get 32GB, DDR5, 6000MT/s, CL36 and EXPO and XMP profiles as a pair of sticks for 18% of the parts total; DDR5 pricing makes memory one of the larger lines in this build.

The B850I Edge TI takes DDR5 and the Ryzen 7 7800X3D supports DDR5, so the Trident Z5 RGB White kit in DDR5 is the matching type. DDR4 and DDR5 sticks are keyed differently, so the wrong type will not seat. The Trident Z5 RGB White totals 32GB in two sticks, so fit them in the slot pair the board manual names for dual-channel operation. If the budget allows more, the Flare X5 64GB offers 64GB at 6000MT/s, roughly 125% dearer than the Trident Z5 RGB White; it stays on the generation the board and processor take.

On the spec sheet, it offers a 7,250MB/s rated read speed and is rated for 2TB.

The SN7100X 2TB offers 2TB, PCIe 4.0 and up to 7250MB/s sequential reads and takes 11% of the parts total.

The B850I Edge TI lists 2 M.2 slots, so the SN7100X 2TB has a home and a second drive can follow. The manual says which slot runs at full PCIe speed. If the budget allows more, the SN5000 4TB offers 4TB on PCIe 4.0, roughly 52% dearer than the SN7100X 2TB; the board's M.2 row is unaffected.

The NZXT C1000 Gold Core is 1000W, Gold rated, ATX 3.1, ATX format, fully modular cables and one 12V-2x6 connector and takes 4% of the parts total.

For an RTX 5070 Ti card the recommended supply is 750W, and the NZXT C1000 Gold Core offers 1000W, a margin of 250W above that figure. The ASUS Prime lists 16-pin 12V-2x6, and the NZXT C1000 Gold Core lists one 12V-2x6 connector, so match the cable to the card's socket. The NZXT C1000 Gold Core is a ATX unit and the A3-mATX lists ATX, SFX or SFX-L, so the supply has a mount.

ATX, SFX and SFX-L units are all listed.

The A3-mATX lists room for mATX, ITX boards, graphics cards up to 415mm and a radiator up to 360mm and takes 3% of the parts total.

Mini-ITX is the B850I Edge TI's size, and the A3-mATX lists mATX, ITX, so the board has a place on its tray. The ASUS Prime is listed at 306mm and the A3-mATX takes cards up to 415mm, which leaves 109mm before a front fan or radiator. The NZXT C1000 Gold Core is a ATX unit and the A3-mATX lists ATX, SFX or SFX-L, so the supply has a mount.

Thermalright recommends a case wider than 250mm, so check the width.

The Frozen Notte 240 is a liquid cooler with a 240mm radiator, 120mm fans and AM5, AM4, Intel mounting, and it takes 2% of the parts total.

AM5 appears in the Frozen Notte 240's supported sockets (AM5, AM4, Intel), so the bracket for the Ryzen 7 7800X3D comes in its box. The Frozen Notte 240 has a 240mm radiator and the A3-mATX lists room for up to 360mm, so it mounts at the front or top as the case manual allows. Check clearance over the memory if it goes on top.