Bykski CPU-XPR-DDC-M DDC Pump Combo CPU Water Cooling Block for AMD Ryzen (AM4/AM3+/FM2+)
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Bykski CPU-XPR-DDC-M DDC Pump Combo CPU Water Cooling Block for AMD Ryzen (AM4/AM3+/FM2+)

3.0 (1) 3.0 out of 5 stars, 1 review Read the reviews
CPU-XPR-DDC-M Only 1 left in Boise, ID
$149.99USDFree shipping, lower 48

US import duties and tariffs are included in every price.

Ships the same business day on orders placed before 2:00 PM MST. Overnight delivery available at checkout.
Ships directly from our Idaho inventory. You avoid overseas sellers, processing delays, international shipping, customs hold-ups and additional fees.
What this works with

Check these against your build before you order. If anything here does not match what you have, ask us first — it is cheaper than a return.

  • AMD A-SERIES APU - A4 / A6 / A8 / A10
  • AMD FX / PHENOM II - FX-4XXX / 6XXX / 8XXX / 9XXX AND PHENOM II
  • AMD RYZEN 1000 - RYZEN 7 / 5 / 3 1XXX
  • AMD RYZEN 2000 - RYZEN 7 / 5 / 3 2XXX
  • AMD RYZEN 3000 - RYZEN 9 / 7 / 5 / 3 3XXX
  • AMD RYZEN 4000 - RYZEN 7 / 5 / 3 4XXX
  • AMD RYZEN 5000 - RYZEN 9 / 7 / 5 5XXX
Not sure? Send us your model/part number and we'll confirm it for you.
Which socket is my CPU? Find your CPU's generation and read the socket and the mounting pattern.
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Building your first loop? Plan the rest of it
Why buy it here
US warranty, handled in Boise
Claims are settled here, by the people who sold it to you.
Exclusive US distributor
The official US source for Bykski, so every part is genuine.
Bykski CPU-XPR-DDC-M DDC Pump Combo CPU Water Cooling Block for AMD Ryzen (AM4/AM3+/FM2+)
0.35 mm micro-channelsAM4 socketNickel-plated copper
CPU block · AM4

Built for AM4.
One copper plate.

A copper water block for AM4. The mounting kit in the box covers every socket listed on this page.

77
Micro-channels
0.35 mm
Channel spacing
G1/4
Ports
The part that touches the CPU

77 channels, 0.35 mm apart

Nickel-plated T2 copper, PMMA top.

The channels are machined into the copper base. Coolant enters over the center of the plate, directly above the hottest part of the chip, and spreads out through the channels to both sides.

The nickel finish keeps the copper from tarnishing in the loop.

Compatibility is decided by the socket, not the chip name

Check the socket on your board

The block fits the socket below and nothing else. Look up the socket for your motherboard, not the processor's name. Which socket is my CPU?

AM4Ryzen 1000 to 5000Backplate mount
The one mistake that costs temperature

The inlet is marked. Use it.

The two ports are not interchangeable. Coolant has to go in through the inlet so it lands on the center of the plate. Plumbed the wrong way round, the block still works but runs warmer, and nothing about it looks wrong.

Both ports are standard G1/4, so any G1/4 fitting fits.

About this part

The Bykski CPU-XPR-DDC-M combines a CPU water block, an 1800-4800 RPM DDC pump, and a PMMA mini-reservoir into one assembly. Fits AMD Ryzen 1000 through 5000 processors, FX, and A-series APUs on AMD sockets (AM4, AM3+, AM3, AM2+, FM2+, FM1).

A 0.35 mm T2 copper base with 77 micro-channels pulls heat from the IHS. The integrated CP-D3B3-X pump provides 700 L/h flow and 6M lift, consolidating your loop inside compact ITX layouts.

In the box
  • 1x CPU/DDC Pump Combo Water Cooling Block
  • 1x Mounting Hardware
  • 5v Addressable RGB LED (RBW)
If the gallery shows a parts diagram, that diagram is the source of truth for what ships.
Datasheet
Technical specifications 20 specs
ModelCPU-XPR-DDC-M
Base MaterialT2 Copper
Base PlatingElectroless Nickel Plating
Base Plate Thickness0.35 mm
Plating Layer Thickness0.001 mm - 0.002 mm
Top MaterialPMMA Acrylic
Dimensions113.74 x 85.40 x 76.07 mm
Port ThreadG1/4
Inlet Ports1
Outlet Ports1
Injection Ports1
Pump ModelCP-D3B3-X
Pump Speed1800 - 4800 RPM
Pump Lift6 m
Pump Flow700 L/h
Pump Power Connector4-pin Molex
Pump Speed Regulation4-pin PWM
Lighting5V Addressable RGB (RBW)
Micro-Channel Count77
Heat Dissipation Area24412.717 mm2
The second compatibility question

Check the space around the socket

Fitting the socket is the first question. The second is whether the block has room: it measures 113.74 x 85.40 x 76.07 mm. Check what sits next to the socket on your board.

The usual problem is an M.2 heatsink right beside the socket. The first memory slot and tall heatsinks around the socket are the next things to check.

Length x width x height113.74 x 85.40 x 76.07 mm
Port threadG1/4
Check firstM.2 heatsink by the socket
Lighting

5V 3-pin ARGB only

The lighting strip plugs into a 5V 3-pin addressable header, labeled ARGB or ADD_HEADER on most boards, or into an ARGB controller.

Do not plug it into a 12V 4-pin RGB headerThe plugs look similar. A 12V header will burn out the strip the moment the machine powers on.
Installing it

Four things decide your temperatures

  1. 01Clean the CPU and the plate, and peel the film. Isopropyl on both until they are dry. Protective film left on the base is the most common cause of a block that "doesn't work".
  2. 02Paste on the CPU, not a pad. A pea-sized dot on a desktop CPU. Thin lines from edge to edge on Threadripper, EPYC and Xeon, where a single dot misses the outer chiplets.
  3. 03Tighten in a cross pattern, finger tight. A turn at a time on each screw. Over-tightening can crack the top or bend the socket's retention frame.
  4. 04Inlet to the inlet, then leak-test before power. Run the pump alone for 30 minutes with paper towel under every joint.

No paper instructions in the box. The installation illustration is in the product images above.

What buyers said

Left by people who bought this part here. Compatibility reports are the useful ones — if you fitted it, say which board.

Customer Reviews

Based on 1 review
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S
Staton O.
It's an alright product with some relatively minor issues.

I like the asthetic and the features the product provides but it has a port blocked by a mounting **** and the pump has some strange harmonics outside of the range of 2300rpm and 2500rpm. Its 114mm in width which does necessitate additional loop planning to accommodate considering most graphics cards are around 140mm in width. Expect to need additional fittings to accomidate this product if you have a narrower graphics card.
Link to my full review: https://youtu.be/82PU8BUXomI

Judge.me YouTube video placeholder

Questions people ask about this part

Answers specific to CPU-XPR-DDC-M. If yours isn't here, ask — we'd rather talk you out of the wrong part than sell you one.

Will it fit my CPU?
It fits the sockets listed on this page and nothing else. Compatibility is decided by the socket on your motherboard, not the processor's name. Not sure which socket you have? Send us the board model and we will check.
Do I need a backplate?
Desktop sockets (AM4, AM5 and the Intel desktop sockets) mount through a backplate, and it is in the box. Threadripper, EPYC and Xeon sockets have no backplate: the block screws straight into the posts on the socket frame.
Which port is the inlet?
It is marked on the block and shown in the installation illustration in the product images. The wrong way round still works but runs warmer, so it is worth getting right.
Will it clear the parts around my socket?
Check the M.2 heatsink next to the socket first, then the first memory slot and any tall heatsinks around the socket. The block dimensions are on this page. If you are unsure, send us a photo of the board around the socket.
Can I use it with an aluminum radiator?
No. Copper and aluminum in the same loop corrode each other. Keep the loop copper, brass and nickel.
Is shipping free?
Yes — shipping is included at this price for addresses in the lower 48 US states.
Do I need anything else to use it?
A CPU block is one part of a loop: you also need a pump, a radiator, fittings, tubing and coolant. Thermal paste and the mounting hardware are in the box. If you are starting from nothing, send us your parts list and we will tell you what is missing.
Who handles the warranty?
BYKSKI.US, the exclusive US distributor, from Boise, Idaho. Claims are handled domestically rather than returned to an overseas factory.

Ask us before you order

Send your exact hardware model and we'll confirm the right part before you spend $149.99 — or tell you honestly that this isn't the one.

Returns are accepted within 30 days and are easy to start in the support center. Unopened items can be returned for store credit with no restocking fee; other returns carry a restocking fee, higher for items that have been installed or used.

Ask about compatibility