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- Best overall: ARCTIC MX-6 (4 g)
- Best budget: ARCTIC MX-4 (4 g)
- Best premium: CORSAIR Premium PCIe 4.0 x16 Extension Cable 300mm
- Best for compact builds: Lian Li PCI-e 4.0 Riser Cable 200mm
- ARCTIC MX-6 thermal paste and PCIe 4.0 riser cables solve different PC-building needs; neither replaces the other.
- Choose ARCTIC MX-6 for applying thermal interface material between a processor and cooler.
- Choose a PCIe 4.0 x16 riser cable when a case layout needs a longer connection to a graphics card.
- Check syringe size, cable length, connector clearance, and case compatibility before buying.
- Compare the exact product variant and your build requirements during Black Friday 2026.
The search phrase “arctic mx-6 vs pcie 4.0 riser cable black friday” brings together two PC components with entirely different jobs. ARCTIC MX-6 is thermal paste for the contact between a processor and its cooler. A PCIe 4.0 riser cable extends a graphics card’s connection to a motherboard. The right choice depends on the part your build needs, not on a direct performance contest between the two categories.
I’m Marcus Reed, and we researched and compared specs, reviews and owner feedback to make this Black Friday 2026 guide useful for PC builders. The picks include thermal pastes for CPU maintenance and PCIe 4.0 cables for flexible graphics-card placement. My pick for most people seeking paste is ARCTIC MX-6 (4 g); for a vertical GPU setup, choose a riser that matches the case layout and cable length.
How We Picked
- We separated thermal pastes from riser cables because they serve different functions and are not substitutes.
- We compared stated package sizes, cable lengths, and connection standards using product specifications.
- We considered the kinds of builds each option suits, including routine CPU maintenance and vertical GPU mounting.
- We reviewed owner feedback for recurring notes about application, fit, cable routing, and compatibility.
- We favored clear, practical specifications that help buyers check fit before shopping during Black Friday 2026.
Comparison Table
| Product | Best for | Product type | Package size or cable length | Interface or thermal conductivity |
|---|---|---|---|---|
| ARCTIC MX-6 (4 g) | Routine CPU and GPU cooler maintenance | Thermal paste | 4 g | 2.6 g/cm³ density |
| ARCTIC MX-6 (8 g) | Frequent PC maintenance and multiple builds | Thermal paste | 8 g | 2.6 g/cm³ density |
| ARCTIC MX-4 (4 g) | Value-focused cooler replacement | Thermal paste | 4 g | 8.5 W/mK conductivity |
| Thermal Grizzly Kryonaut (1 g) | A focused premium paste application | Thermal paste | 1 g | 12.5 W/mK stated conductivity |
| Cooler Master MasterAccessory Riser Cable PCIe 4.0 x16 300mm | Builds needing a 300 mm GPU connection | GPU riser cable | 300 mm | PCIe 4.0 x16 |
| CORSAIR Premium PCIe 4.0 x16 Extension Cable 300mm | Premium-style GPU extension builds | Extension cable | 300 mm | PCIe 4.0 x16 |
| Lian Li PCI-e 4.0 Riser Cable 200mm | Compact cases and short cable routes | GPU riser cable | 200 mm | PCIe 4.0 x16 |
Best Picks Reviewed
#1 · Top pick
ARCTIC MX-6 (4 g)
The ARCTIC MX-6 (4 g) is the best thermal paste for most routine CPU maintenance, with a 4 g syringe for multiple applications. The compact size suits builders who want the current MX-6 formula without buying a larger tube.
Best for: Routine CPU and GPU cooler maintenance
- Package size
- 4 g
- Product type
- Thermal paste
- Density
- 2.6 g/cm³
- Useful size for a typical home build
- Designed for processor and graphics-card cooling applications
- Syringe format supports controlled application
- Not a substitute for a graphics-card riser cable
Is ARCTIC MX-6 (4 g) worth buying on Black Friday 2026?
ARCTIC MX-6 (4 g) is a sensible pick for routine cooler installation and maintenance. The 4 g syringe offers a practical quantity for home builders, while the paste serves a different purpose from a PCIe riser cable.
See today’s Black Friday price on Amazon
#2
ARCTIC MX-6 (8 g)
The ARCTIC MX-6 (8 g) is the best thermal paste for repeat builds and frequent cooler maintenance, with an 8 g syringe. The larger quantity makes it a practical option for builders who use paste across several systems.
Best for: Frequent PC maintenance and multiple builds
- Package size
- 8 g
- Product type
- Thermal paste
- Density
- 2.6 g/cm³
- More paste than the 4 g variant
- Suitable for CPU and GPU cooler applications
- Syringe packaging helps with controlled dispensing
- A larger tube is unnecessary for occasional single-PC service
Is ARCTIC MX-6 (8 g) a good choice for multiple PC builds?
ARCTIC MX-6 (8 g) suits builders who service several PCs or replace coolers regularly. The 8 g package provides more paste than the smaller MX-6 option, while the thermal interface function remains the same.
See today’s Black Friday price on Amazon
#3
ARCTIC MX-4 (4 g)
The ARCTIC MX-4 (4 g) is the best value-oriented thermal paste for basic cooler replacement, with a 4 g package and a stated thermal conductivity of 8.5 W/mK. The familiar format is straightforward for routine maintenance.
Best for: Value-focused cooler replacement
- Package size
- 4 g
- Thermal conductivity
- 8.5 W/mK
- Density
- 2.5 g/cm³
- Practical 4 g quantity
- Manufacturer lists thermal conductivity
- Useful for standard CPU cooler servicing
- Not the MX-6 formula
Is ARCTIC MX-4 (4 g) worth considering instead of MX-6?
ARCTIC MX-4 (4 g) is worth considering for straightforward cooler maintenance when a familiar, compact paste package is the priority. ARCTIC lists 8.5 W/mK thermal conductivity; compare application needs and product details rather than treating that figure as a direct cross-brand ranking.
See today’s Black Friday price on Amazon
#4
Thermal Grizzly Kryonaut (1 g)
The Thermal Grizzly Kryonaut (1 g) is the best premium thermal paste pick for builders seeking a small quantity of a performance-focused formula, with a 1 g package. The compact tube fits a targeted cooler installation or maintenance job.
Best for: A focused premium paste application
- Package size
- 1 g
- Product type
- Thermal paste
- Manufacturer-stated conductivity
- 12.5 W/mK
- Small package suits a single targeted job
- Designed for demanding cooling applications
- Compact format takes little storage space
- Less paste than the ARCTIC 4 g options
Is Thermal Grizzly Kryonaut (1 g) worth buying on Black Friday 2026?
Thermal Grizzly Kryonaut (1 g) is a premium thermal-paste option for a focused cooler installation. The Thermal Grizzly Kryonaut (1 g)'s 1 g package is compact, and its stated conductivity is a manufacturer specification, not a guarantee of a particular temperature change in every PC.
See today’s Black Friday price on Amazon
#5
Cooler Master MasterAccessory Riser Cable PCIe 4.0 x16 300mm
The Cooler Master MasterAccessory Riser Cable PCIe 4.0 x16 300mm is the best long-reach pick for compatible builds that need a 300 mm graphics-card connection. The PCIe 4.0 x16 format targets systems where the GPU needs repositioning from the motherboard slot.
Best for: Builds needing a 300 mm GPU connection
- Interface
- PCIe 4.0 x16
- Cable length
- 300 mm
- Product type
- GPU riser cable
- 300 mm reach supports flexible routing
- PCIe 4.0 x16 connection
- Purpose-built for graphics-card placement
- Confirm case space and routing before purchase
Is Cooler Master MasterAccessory Riser Cable PCIe 4.0 x16 300mm suitable for a vertical GPU?
Cooler Master MasterAccessory Riser Cable PCIe 4.0 x16 300mm is designed to extend a compatible graphics-card connection. The Cooler Master MasterAccessory Riser Cable PCIe 4.0 x16 300mm's 300 mm length offers routing flexibility, but buyers should confirm mounting hardware, case clearance, and the GPU’s intended orientation.
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#6
CORSAIR Premium PCIe 4.0 x16 Extension Cable 300mm
The CORSAIR Premium PCIe 4.0 x16 Extension Cable 300mm is the best premium riser pick for a compatible build needing a 300 mm extension. The CORSAIR Premium PCIe 4.0 x16 Extension Cable 300mm's PCIe 4.0 x16 standard gives builders a clear connection specification to check against their motherboard and graphics card.
Best for: Premium-style GPU extension builds
- Interface
- PCIe 4.0 x16
- Cable length
- 300 mm
- Product type
- Extension cable
- 300 mm cable length
- PCIe 4.0 x16 connection
- Useful for compatible custom layouts
- Check whether the case includes a separate GPU mounting bracket
Is CORSAIR Premium PCIe 4.0 x16 Extension Cable 300mm worth buying?
CORSAIR Premium PCIe 4.0 x16 Extension Cable 300mm is a strong choice when a build calls for a 300 mm PCIe 4.0 x16 extension. Confirm the case mounting arrangement and required cable path before choosing it for a vertical GPU setup.
See today’s Black Friday price on Amazon
#7
Lian Li PCI-e 4.0 Riser Cable 200mm
The Lian Li PCI-e 4.0 Riser Cable 200mm is the best compact-layout pick for compatible cases needing a shorter GPU connection, with a 200 mm cable. The shorter reach can help keep routing tidy when the graphics card sits close to its intended position.
Best for: Compact cases and short cable routes
- Interface
- PCIe 4.0 x16
- Cable length
- 200 mm
- Product type
- GPU riser cable
- Shorter 200 mm routing option
- PCIe 4.0 x16 connection
- Fits builds where long cables add clutter
- Less reach than 300 mm alternatives
Is Lian Li PCI-e 4.0 Riser Cable 200mm good for a compact PC?
Lian Li PCI-e 4.0 Riser Cable 200mm is a useful option for compact layouts that need a shorter route between the motherboard and graphics card. Check the case’s mounting position and actual routing path to confirm that 200 mm is sufficient.
See today’s Black Friday price on Amazon
Are ARCTIC MX-6 and PCIe 4.0 riser cables the same kind of product?
ARCTIC MX-6 thermal paste and PCIe 4.0 x16 riser cables serve two different PC-building jobs. ARCTIC MX-6 fills microscopic gaps between a processor and its cooler, while a riser cable extends a motherboard’s graphics-card connection.
A buyer choosing between these products should first identify the part needed for the build. A cooler replacement or processor installation calls for thermal paste. A vertical GPU arrangement or a case layout that moves the graphics card away from the motherboard calls for a compatible riser cable.
The products are not alternatives in a performance contest. Some builds need both: thermal paste for cooler contact and a riser for graphics-card placement.
Which ARCTIC MX-6 size should you choose?
ARCTIC MX-6 (4 g) suits a typical maintenance job, while ARCTIC MX-6 (8 g) better fits repeat servicing or multiple builds. Both variants use the same paste formula; the practical distinction is the amount in the syringe.
For a single PC build or an occasional cooler replacement, the 4 g package is a straightforward choice that avoids storing excess material. Builders who maintain several systems can favor the 8 g tube for its larger quantity.
Check that the product listing matches the requested MX-6 size, since package variants are easy to confuse. Select paste only when the cooling interface needs fresh thermal material.
How do you choose a PCIe 4.0 riser cable length?
Lian Li PCI-e 4.0 Riser Cable 200mm suits shorter routes, while the Cooler Master MasterAccessory Riser Cable PCIe 4.0 x16 300mm and CORSAIR Premium PCIe 4.0 x16 Extension Cable 300mm provide 300 mm of reach. Measure the path in the case before choosing.
The required route includes bends and the position of the motherboard slot, graphics card, and mounting bracket. A cable that looks long enough in a straight line can fall short once routed around case components. Leave room for gentle bends rather than forcing a tight curve.
Confirm that the cable’s PCIe generation and x16 connection match the build, then check whether the case needs a separate vertical GPU bracket.
Does a PCIe 4.0 riser cable improve GPU performance?
A PCIe 4.0 x16 riser cable is primarily a connection and placement accessory, not a graphics-card upgrade. The Cooler Master MasterAccessory Riser Cable PCIe 4.0 x16 300mm, CORSAIR Premium PCIe 4.0 x16 Extension Cable 300mm, and Lian Li PCI-e 4.0 Riser Cable 200mm all target flexible GPU placement.
A compatible cable lets a graphics card sit away from its motherboard slot, which can support a vertical display or a particular case layout. The cable does not add graphics processing capability or replace the GPU.
Check system compatibility and follow the case and motherboard instructions after installation. Buyers comparing specifications should treat cable length, connector type, and PCIe generation as fit criteria rather than speed upgrades.
What should you compare during Black Friday 2026?
For Black Friday 2026, compare the exact variant, package quantity, interface, and fit requirements before selecting a component. ARCTIC MX-6 (4 g) and ARCTIC MX-6 (8 g) differ in quantity, while the three riser cable options differ in brand and listed length.
Read the complete product name on the listing and confirm that the selected variant matches the part you need. Thermal paste and risers are easy to mix up in broad PC accessory searches because both appear in custom-build shopping results.
Choose a cable only after checking case layout, routing distance, and mounting needs. Choose paste based on the cooler service job and the amount required. Clear specifications make the comparison more useful than a category label alone.
Buying Guide
Start with the PC part you need
Choose thermal paste for the contact between a processor or graphics chip and its cooler. Choose a PCIe riser cable to reposition or extend a graphics card’s motherboard connection. The categories solve different problems.
Pick a thermal paste quantity
ARCTIC MX-6 (4 g) fits many single-system jobs. ARCTIC MX-6 (8 g) gives repeat builders more material. Compare package size with how often you service coolers, not with riser-cable length.
Measure the GPU cable route
Measure from the motherboard slot to the graphics-card position along the planned route. Include bends and clearance around other parts. A 200 mm cable suits shorter routes; a 300 mm cable offers additional reach.
Check the standard and mounting setup
Match the riser cable’s PCIe generation and x16 connection to your build. Confirm that the case supports the intended GPU position and identify whether a separate bracket is required.
Compare exact listings for Black Friday
Read the full model name and variant before ordering. Confirm paste quantity, cable length, connector standard, and included accessories. A familiar brand name alone does not confirm the exact item or its compatibility.
FAQ
What is the difference between ARCTIC MX-6 and a PCIe 4.0 riser cable?
ARCTIC MX-6 is thermal paste that supports contact between a processor or graphics chip and its cooler. A PCIe 4.0 riser cable extends a graphics card’s connection to a motherboard. The products serve different purposes, so choose based on the component your build needs.
Which ARCTIC MX-6 size is best for one PC?
ARCTIC MX-6 (4 g) is a practical size for a typical single-PC cooler installation or maintenance job. ARCTIC MX-6 (8 g) offers more paste for repeat servicing or several builds. Both package sizes contain the same product formula.
Is a 200 mm or 300 mm PCIe 4.0 riser cable better?
A 200 mm cable suits a shorter route, while a 300 mm cable provides more reach. Measure the actual path through the case, including bends and clearance. Choose the shortest length that fits the intended GPU position without pulling the cable taut.
Can I use thermal paste instead of a graphics-card riser cable?
No. Thermal paste transfers heat across the contact between a chip and cooler; a riser cable connects a graphics card to a motherboard slot. A build requiring both cooler maintenance and a relocated GPU needs the appropriate product for each job.
What should I check before buying a PCIe 4.0 riser cable?
Confirm PCIe generation, x16 connection, cable length, case clearance, and GPU mounting position. Check whether the case includes a suitable bracket or requires a separate mounting part. Measuring the planned cable path helps avoid a cable that is too short.
Is ARCTIC MX-4 a substitute for ARCTIC MX-6?
ARCTIC MX-4 and ARCTIC MX-6 are both thermal pastes for cooler applications, but they are distinct products. Compare the exact formula, package size, and manufacturer specifications before choosing. Neither product serves as a PCIe riser cable.