AMD Ryzen 7 3800XT socket: AM4
The AMD Ryzen 7 3800XT uses the AM4 socket. It is an 8-core Matisse 2 refresh at 105 W that fits 500 series boards natively and 400 series boards after a BIOS update.
- Socket
- AM4
- Launched
- July 2020
- Cores and threads
- 8 and 16
- Default TDP
- 105 W
- Codename
- Matisse 2
- Segment
- Desktop
- Family
- AMD Ryzen 7
- Clocks
- 3.9 / 4.7 GHz
AMD Ryzen 7 3800XT specifications
| Cores | 8 |
|---|---|
| Threads | 16 |
| Core architecture | Zen 2 (Matisse 2) |
| Clocks | 3.9 GHz base, up to 4.7 GHz boost |
| Cache | 32 MB L3 and 4 MB L2 |
| Default TDP | 105 W |
| Manufacturing process | TSMC 7 nm FinFET |
| Memory support | DDR4 up to 3200 MT/s, two channels |
| PCI Express | PCIe 4.0 |
| Integrated graphics | None. A graphics card is required |
| Multiplier | Unlocked |
| Package | AM4 (PGA1331) |
| Cooler in the box | None |
| Launch price | $399 manufacturer recommended price at launch |
Motherboard and chipset compatibility
AMD Ryzen 7 3800XT needs a motherboard with a AM4 socket. The table shows which chipset series accept it.
| Series | Chipsets | Support |
|---|---|---|
| 500 series | X570, B550, A520 | Works out of the box |
| 400 series | X470, B450 | Needs a BIOS update |
| 300 series | X370, B350, A320 | Needs a BIOS update Needs a 2020 or newer BIOS with XT microcode from the board maker. |
Board makers publish a CPU support list for every model. Check it for your exact board before buying. Chipset details for AM4.
Recommended GPU pairing
| Recommended tier | Mid-range 1440p |
|---|---|
| Example GPUs | GeForce RTX 2060 Super, Radeon RX 5700 |
| Target resolution | 1440p high settings |
Eight Zen 2 cores at up to 4.7 GHz with DDR4-3200 and PCIe 4.0 match mid-range 1440p cards from its 2020 era such as the GeForce RTX 2060 Super and the Radeon RX 5700. A faster card still works in the same slot, and the balance shifts with game, settings and resolution.
This is a rough match for a new build at the stated resolution, not a limit. A faster card still works and helps at higher resolutions or in games that load the GPU more than the CPU. A slower card is fine for lighter games and office use. The exact balance shifts with the game, the settings and the resolution, so no percentage is given.
AM4 at a glance
| Type | PGA, 1,331 contacts |
|---|---|
| Package size | 40 × 40 mm |
| Introduced | 2016 |
| Memory | DDR4 only |
| Cooler mounting holes | 54 × 90 mm |
What the Ryzen 7 3800XT is
The AMD Ryzen 7 3800XT is an eight core, sixteen thread desktop processor in the Ryzen 3000XT refresh built on the Zen 2 core design with the Matisse 2 codename. It runs at 3.9 GHz base and boosts up to 4.7 GHz, and it carries 32 MB of L3 cache with 4 MB of L2 in a chiplet package made with TSMC 7 nm FinFET. AMD rates it at 105 W default TDP, and the multiplier is unlocked.
AMD built this chip as a higher binned Matisse part with increased boost clocks over the 3800X. One compute chiplet with eight active cores plus the I/O die forms the package, with two core complexes of four cores each sharing 16 MB of L3 per complex. The refresh keeps everything else that made Matisse notable: PCIe 4.0 lanes, DDR4 at up to 3200 MT/s and the same AM4 package with 1331 pins.
AMD listed the processor in July 2020 with a $399 manufacturer recommended price, and it reached shelves without a boxed cooler as the enthusiast pick among 8-core Zen 2 parts. Eight cores with 36 MB of total cache place it in the mid-range 1440p class of its era, next to cards such as the GeForce RTX 2060 Super and the Radeon RX 5700. The CPU cooler compatibility by socket guide covers AM4 mounting for the tower cooler that a 105 W chip needs.
Socket and motherboard compatibility
The Ryzen 7 3800XT fits the AM4 socket, a pin grid array design with 1331 pins on the processor itself. B550 and X570 boards accept it natively with a recent BIOS, since the XT refresh arrived after those chipsets launched. Older 400 series boards accept it after a BIOS update from the board maker that adds Ryzen 3000XT support.
The board choice decides how much of the chip is usable. A 500 series board wires the processor PCIe 4.0 lanes to the graphics slot and one NVMe slot at full speed, while a 400 series board runs the same lanes at PCIe 3.0 speed. Before buying for an existing board, find the exact model on the maker CPU support page and read which BIOS version adds Matisse 2, since early BIOS releases predate this chip.
The XT refresh shares boards with the AMD Ryzen 3 3100 and other Matisse parts, but it asks for stronger power delivery at 105 W. Budget A320 boards that run a 65 W 3100 may still boot a 3800XT after the right BIOS, yet sustained boost to 4.7 GHz needs solid VRMs and airflow. The socket supports the chip, but the board decides the sustained result.
Memory, PCIe and cooling
The memory controller supports DDR4 at up to 3200 MT/s across two channels, and faster kits run with an XMP or DOCP profile switched on in the BIOS. Builders often pair it with a 2 x 16 GB kit at 3200 MT/s or 3600 MT/s, which keeps dual channel mode active for eight cores. There is no DDR5 path on AM4.
The processor exposes PCIe 4.0 lanes for graphics and storage, but the board decides the speed they run at. On X570 and B550 boards a graphics card and a fast NVMe drive can use the full 4.0 speed, while on 400 series boards the same chip runs at PCIe 3.0 speed with no other change needed. Cooler mounting uses the AM4 pattern of holes spaced 54 × 90 mm. No box cooler is included, so a tower rated above 105 W or a 240 mm liquid unit covers stock operation with boost headroom.
Power delivery matters more here than on 65 W Matisse. The 105 W rating with unlocked multiplier allows manual tuning on boards that permit it, but Precision Boost already reaches 4.7 GHz where cooling allows. A board with dual EPS and clean airflow holds boost longer than a thin budget board with the same BIOS version.
Upgrade paths
On the same socket, the 3800XT is itself a late upgrade for owners of first and second generation Ryzen chips, since it keeps the board and the DDR4 memory while adding eight Zen 2 cores with higher boost. From the 3800XT upward, the next steps without leaving AM4 are the AMD Ryzen 9 3900XT for twelve cores when thread count matters, with the later AMD Ryzen 7 5800X as the Zen 3 step on the same board. Each of those moves reuses the same board, memory and cooler mounting.
Moving past AM4 entirely means a new board and DDR5 memory on AM5. For a buyer choosing inside the 2020 refresh at launch prices, the 3800XT suited high refresh 1440p near $399 without a bundled cooler, while the 3900XT asked $499 for four more cores. The two share the socket, the memory type, the PCIe version and the 105 W rating, so either drops into the same boards with the right BIOS.
Used buyers meet the same rules. A 3800XT from a parted out build needs a board whose support list names Matisse 2, fresh thermal paste and a cooler rated past 105 W. The unlocked multiplier helps where the board allows tuning, but the main gain over a 3700X class chip is higher out of box boost rather than manual headroom.
Frequently asked questions
What socket does the AMD Ryzen 7 3800XT use?
It uses AM4, a pin grid array socket with 1331 pins on the processor. It needs a BIOS with Matisse 2 support on 400 and 500 series boards.
What memory does the Ryzen 7 3800XT support?
DDR4 at up to 3200 MT/s across two channels. Faster kits run with an XMP or DOCP profile switched on in the BIOS. There is no DDR5 option on AM4.
Does the Ryzen 7 3800XT come with a cooler?
No box cooler is included. A tower rated past 105 W or a 240 mm liquid unit covers stock operation with boost to 4.7 GHz. Mounting uses the AM4 54 × 90 mm pattern.
How does the 3800XT differ from the 3900XT?
The 3800XT is an 8-core 105 W refresh with 3.9 GHz base and up to 4.7 GHz boost, while the AMD Ryzen 9 3900XT is a 12-core 105 W refresh with 3.8 GHz base and the same boost. Both share AM4, DDR4 and PCIe 4.0.
Sources and verification
- AMD Ryzen 7 3800XT specifications (AMD)
- Zen 2 Matisse 3000 series - 3800XT (Wikipedia)
- Socket AM4 - 1331 pins and DDR4 (Wikipedia)
Facts last checked against these sources on . Page last edited on .