1. Introduction
The ID-COOLING IS-77-XT is a high-performance, low-profile CPU cooler designed for compact systems. Featuring a 77mm height, a 12cm thin fan, and six self-developed heat pipes with a reflow soldering process, it delivers flagship cooling performance. This cooler is capable of handling up to 150W TDP, making it an ideal solution for maximizing the performance of current high-end CPUs in space-constrained chassis.
2. Specifications
Below are the detailed specifications for the ID-COOLING IS-77-XT CPU Cooler:
| Feature | Specification |
|---|---|
| Model Number | IS-77-XT BLACK |
| Cooler Type | Low Profile |
| Product Dimensions | 132 × 120 × 77 mm (L×W×H) |
| Heatpipes | 6 |
| TDP Support | 150W |
| Fan Size | 120 × 120 × 17 mm |
| Rated Voltage | 12VDC |
| Rated Current | 0.28A |
| Fan Speed | 800 - 3000 ± 10% RPM |
| Max Air Volume | 47.5 CFM |
| Max Wind Pressure | 2.37 mmH2O |
| Noise Level | 33.2 dB(A) |
| Bearing Type | Hydraulic Bearing |
| Fan Life | 100,000 hours |
| Blade Quantity | 9 |
| Power Interface | 4PIN |
| Supported CPU Sockets | Intel: LGA1851, LGA1700, LGA1200, LGA1150, LGA1151, LGA1155, LGA1156 AMD: Socket AM5, AM4 |
| Package | Yes (Exquisite packaging) |
3. Package Contents
The ID-COOLING IS-77-XT CPU Cooler package includes the following items:
- ID-COOLING IS-77-XT CPU Cooler (pre-assembled with 120mm fan)
- Intel Mounting Brackets (for LGA1851/1700/1200/115X sockets)
- AMD Mounting Brackets (for AM4/AM5 sockets)
- Mounting Screws and Spacers
- Thermal Paste (ID-COOLING FROST X45)
- Installation Guide
4. Setup and Installation
Follow these steps to properly install your ID-COOLING IS-77-XT CPU Cooler:
-
Prepare the CPU and Motherboard:
Ensure your CPU is correctly seated in its socket. Clean the CPU surface thoroughly with isopropyl alcohol to remove any old thermal paste or residue.
Figure 7: Important: Remove the protective film/sticker from the cooler base before installation. -
Install Mounting Hardware:
The IS-77-XT comes with high-voltage mounting brackets compatible with both Intel (LGA1851/1700/1200/115X) and AMD (AM4/AM5) platforms. Select the appropriate brackets for your motherboard.
- For AMD platforms, you will need to use the original motherboard backplane.
- The dual AMD bracket supports both vertical and horizontal installation methods.
Figure 8: Intel and AMD mounting kits, including brackets, screws, and thermal paste. -
Apply Thermal Paste:
Apply a small amount of the included thermal paste (ID-COOLING FROST X45) to the center of your CPU's integrated heat spreader (IHS). A pea-sized dot is usually sufficient.
-
Mount the Cooler:
Carefully place the cooler onto the CPU, aligning the mounting holes with the installed brackets. Secure the cooler using the provided screws. Tighten screws in a diagonal pattern to ensure even pressure and optimal contact.
Important Considerations:
- RAM Clearance: The maximum supported RAM module height is 42 mm when the heat pipe elbow faces the I/O panel.
- Recommended Installation Direction: For optimal compatibility and clearance, the curved part of the heat pipes should face the memory modules.
Figure 9: Recommended cooler orientation (heat pipes facing memory) and maximum RAM height (42mm) when facing I/O panel. -
Connect the Fan:
Connect the 4-pin fan cable from the cooler to the CPU_FAN header on your motherboard.
5. Operation
The ID-COOLING IS-77-XT is designed for efficient and quiet operation. Here are some details regarding its functionality:
-
Fan Airflow Direction:
The fan is pre-installed to blow air downwards towards the motherboard and CPU socket. This configuration is designed to reduce air intake whistling by positioning the fan slightly away from the side panel of the chassis.
Figure 10: Default fan installation with downward airflow (Inlet Air Channel Direction). -
Optional Exhaust Air Channel:
For specific compact cases where a perforated top panel is directly above the radiator, you can remount the fan (with its front facing down) to blow air upwards. This helps expel hot air directly instead of accumulating inside the case. If you change the fan installation direction, ensure the corresponding screws are also replaced.
Figure 11: Optional fan installation for upward airflow (Exhaust Air Channel). -
High Performance Fan:
The slim 12cm fan features double-sided shock-absorbing pads, contributing to excellent quietness while providing strong airflow (47.5 CFM) that thoroughly penetrates the heatsink module for effective heat dissipation.
Figure 12: The high-performance 120mm fan with shock-absorbing pads. -
Stability and Heat Transfer:
The large fin stack incorporates a fin-folding design for enhanced structural stability. Reflow soldering securely attaches the fins to the heat pipes, ensuring superior heat transfer performance from the CPU to the heatsink.
Figure 13: Detail of the fin stack design and heat pipe attachment for stability and efficient heat transfer.
6. Maintenance
Regular maintenance helps ensure optimal performance and longevity of your CPU cooler:
- Dust Removal: Periodically clean the heatsink fins and fan blades to prevent dust buildup. Use compressed air or a soft brush. Ensure the fan is not spinning rapidly when using compressed air to avoid damage to the bearings.
- Thermal Paste: While not required frequently, if you remove the cooler for any reason (e.g., CPU upgrade), it is recommended to clean off the old thermal paste from both the CPU and cooler base and apply a fresh layer.
- Fan Inspection: Check the fan periodically for any signs of wear, unusual noise, or reduced performance.
7. Troubleshooting
If you encounter issues with your ID-COOLING IS-77-XT CPU Cooler, consider the following:
-
High CPU Temperatures:
- Ensure the cooler is securely mounted and making good contact with the CPU.
- Verify that thermal paste was applied correctly and evenly.
- Check if the fan is spinning. If not, ensure it's properly connected to the motherboard's CPU_FAN header.
- Clean any dust buildup from the heatsink fins and fan blades.
- Confirm proper airflow within your PC case.
-
Excessive Fan Noise:
- Check for any cables or obstructions hitting the fan blades.
- Ensure the fan is securely attached and not loose.
- Dust buildup can sometimes cause noise; clean the fan.
- If the noise is a grinding or rattling sound, the fan bearing might be failing.
-
Fan Not Spinning:
- Verify the 4-pin fan connector is fully seated in the CPU_FAN header on the motherboard.
- Check BIOS/UEFI settings to ensure the CPU fan control is enabled and set appropriately (e.g., not set to 0 RPM at low temperatures if the fan supports it).
8. User Tips
Based on user experiences, here are some helpful tips for getting the most out of your IS-77-XT cooler:
- Users have reported significant temperature drops (e.g., from 78°C to 71°C in Cinebench R23) when upgrading to the IS-77-XT, indicating strong performance for its size.
- The all-black design of the IS-77-XT makes it aesthetically pleasing and easy to match with other black components in your PC build.
- Installation is generally straightforward, and the cooler is noted for not interfering with RAM modules, especially when installed with the heat pipes facing the memory.
- The cooler effectively keeps CPUs running smoothly and cool, even under load.
9. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the official ID-COOLING website or contact your retailer. Keep your proof of purchase for warranty claims.