Silenx IXN40C 40mm iXtrema Pro Chipset Cooler

This lowered my temps by over 15C. Super easy to install as well, excellent quality, fit perfect and was an excellent upgrade over replacement with different type of heat sink for the price.

This thing will keep your ASIC super cool. Super easy to install on a Bitaxe and works with your standard 40mm fans. Copper just rules for heat dissipation.

I used the attaching plastic retainers to mount this heatsink onto a Bitaxe Gamma (601). I did not use the provided thermal paste, I instead used what I normally use, Artic MX-6. It fit just about perfectly, with only one thing to consider. When you install it, make sure that none of the fins press down on the RESET or BOOT micro buttons. I had to slightly widen the gap between two fins to ensure clearance from the BOOT micro button ( it was pressing down on it). BOOT button aside, this heatsink it EXCELLENT! I did not use the 12VDC fan that it came with, I used instead a Bitaxe stock 40x40x20 5VDC fan (Caizhu), which mounted just right with the 2 screws that were provided in the heatsink's package. I run the fan at 55% (5341 RPM. Max is 7040 RPM), with the Bitaxe settings at 625 Mhz and 1.250 VDC. The ASIC Temp runs 42-46°C and Voltage Regulator Temp runs 48-55°C, depending on the room's temperature. I overclocked the Gamma with this heatsink as follows:74% fan (6861-6967 RPM, near max of 7040 RPM)1.501 TH/s = 736 Mhz, 1.250 VDC, ASIC Temp 43°C, VR Temp 54°C (This was slow to ramp up and meet 1.501 TH/s)1.501 TH/s = 736 Mhz, 1.260 VDC, ASIC Temp 46°C, VR Temp 59°C (This was a comfortable OC run)1.750 TH/s = 858 Mhz, 1.250 VDC, ASIC Temp 46°C, VR Temp 61°C (This was still a comfortable OC run)2.001 TH/s = 981 Mhz, 1.250 VDC, ASIC Temp 49°C, VR Temp 72°C (This ran, but was not meeting 2.001 TH/s)2.001 TH/s = 981 Mhz, 1.270 VDC, ASIC Temp 54°C, VR Temp 80°C (This ran, met 2.001 TH/s, but VR Temp was high)This heatsink is solid! You touch it, it is relatively cool to the touch - impressive!I intend to mount a 60x60x25 Noctua fan over the heatsink, probably using paperclips or 0.020 copper wire.Now, the next step is to implement a way to cool off the Voltage Regulator so you can comfortably run 2.001 TH/s.Good luck!

Bought this to replace the dying northbridge heatsink/fan on my ECS C-19A motherboard.Installation went fairly smoothly. I had to lightly wrangle the spring bracket into position (after spending a minute trying to get it back into place on the heatsink--if it comes out, it's a small puzzle trying to fix it).Thermal paste provided is a little difficult to work with because of its consistency, but they certainly included plenty (about three or four times what you need). I've probably got paste all over the underside of the heatsink.(Also, installation protip: apply the foam spacer to the heatsink before placing it...)The fan runs pretty much silently. It's definitely the quietest noise-making thing in my case. I had to hold it literally right next to my ear to hear any kind of noise. (The air moving through it makes more noise than the fan itself!)The heatsink alone got me down to a bit more than acceptable temperatures (i.e. warm, not quite hot), and will probably work fine for most people. But since my northbridge gets wicked hot--I could probably cook a tiny egg on it if I wanted to--I put on the fan too, and that brought me down to acceptable levels (i.e. warm to the touch).Only thing I'd change about this is I'd take off the LEDs. I don't need them. (But I guess they don't hurt anything, either.)EDIT: After further review, I've noticed a few other things. Today was a record-setting temperature day (92°F/33°C), so I was paying attention to the northbridge temperature. It was getting FAR too hot, so I examined it. Turns out, the fan blows air OUT the sticker side, so I had it on upside-down. I flipped it over, but it didn't help. The fan moves next to no air. I had to take it off and replace it with an old Pentium CPU fan. Runs at room temperature now.Bottom line: Don't buy for environments > 75°F / 24°C. It just can't handle it. If your house is air-conditioned or you live in a cool climate, though, go for it.

This heatsink works great compared to the stock heatsink that it is replacing. Strange the product photo doesn't show that the heatsink also comes with a fan - whoever sells this product should add more pictures of the product, and make them higher resolution.

The kit comes with a fan and a heat sink. The fan is 12v and probably great but the copper heatsink is the star of the show. I replaced the stock heat sink on my Bitaxe gamma with this and it dropped my asic temp by ~13C. I’m very been able to safely over lock the Bitaxe with plenty of thermal overhead so I’m not likely to damage it anytime soon. Highly reccomend…in fact I just ordered 3 more so take that for what it’s worth.

Amazing heatsink i honestly love it it it keeps the temperature super cool. It fits perfectly its quiet with the fan that i bought.

Bought for my Bitaxe. Little modification and it worked. What it really needs is a four pin fan.