Bykski N-ST4070XG-X Full-Cover GPU Water Block + Backplate for Zotac RTX 4070 12GB X-Gaming, Nickel Copper + PMMA, G1/4, 5V A-RGB

Bykski N-ST4070XG-X Full-Cover GPU Water Block + Backplate for Zotac RTX 4070 12GB X-Gaming, Nickel Copper + PMMA, G1/4, 5V A-RGB

TL;DR: The N-ST4070XG-X is a full-cover GPU water block engineered specifically for the Zotac Gaming GeForce RTX 4070 12GB X-Gaming PCB. The base is ultra-high-purity copper with nickel electroplating, paired with a clear PMMA acrylic top for coolant visibility. A single integrated flow channel cools the...

Common Applications

The N-ST4070XG-X is a full-cover GPU water block engineered specifically for the Zotac Gaming GeForce RTX 4070 12GB X-Gaming PCB. The base is ultra-high-purity copper with nickel electroplating, paired with a clear PMMA acrylic top for coolant visibility. A single integrated flow channel cools the AD104 GPU die, GDDR6X memory modules, and VRM stages in one pass. G1/4 ports are exposed at the top and bottom of the block for serial or parallel multi-block plumbing, and the bundled 5V 3-pin A-RGB (RBW) light strip plugs directly into a standard motherboard ARGB header. The kit ships with the block, backplate, two G1/4 stop fittings, mounting hardware, thermal grease, and the A-RGB strip.

Frequently Asked Questions

Q: Which graphics card does the N-ST4070XG-X fit?

A: Zotac Gaming GeForce RTX 4070 12GB X-Gaming only. It will not fit Zotac Twin Edge, AMP, or other RTX 4070 PCBs.

Q: What RGB header does the strip use?

A: 5V 3-pin addressable RGB (A-RGB / RBW). Do not connect it to a 12V 4-pin RGB header or the LEDs and controller will be damaged.

Q: What materials are used in the block?

A: Nickel-electroplated high-purity copper cold plate with a PMMA acrylic top. The backplate is metal and isolated from the coolant path.

Q: What fittings are used?

A: G1/4 inch threaded, with usable ports on top and bottom for serial or parallel plumbing in multi-block loops.

Q: What is included in the box?

A: Block, backplate, two G1/4 stop fittings, mounting hardware, thermal grease, and a 5V A-RGB (RBW) light strip.