I dont have thermal grease, what is a good alternative?
Years ago I used silver paint and it worked well.
Unless it's an emergency just wait until you have thermal paste. If it is an emergency:
Thermal paste mostly works due to the zinc oxide. The best TEMPORARY fix is to use diaper rash cream from a grocery store.
It's important to remember though that while both products are nearly identical, diaper rash cream has a lot of extra stuff including a higher water content so use just a tiny drop on the end of a toothpick and replace it with real thermal paste ASAP.
Toothpaste (non grit) and pencil lead shavings work well together, I got a 10 degree Celsius decrease using this method.
This page tests various temporary thermal interface material (TIM) solutions, some of which cooled better than 8-year-old stock goop:
Degrees Celsius, idle and load in 6 C room:
1. Dielectric Silicone: 22, 34
2. Liquid Gel Deodorant: 23, 34
3. Crest Toothpaste: 22, 35
4. X-Balm Chapstic: 23, 35
5. Antiseptic Gel: 25, 36 (cools about as well as stock TIM)
6. High Temp Grease: 23, 38
7. Hair Molding Clay: 25, 38
8. Aluminum Foil: 25, 38
9. Raspberry Preserves: 25, 40+
10. Anti Seize Lubricant: 26, 42
11. No TIM: 27, 45
12. Creamy Peanut Butter: 27, 53
In 18 C room:
1. Mayonnaise: 31, 45
2. Ranch Dressing: 30, 47
3. Shaving Gel: 33, 47
4. Easy Cheese: 33, 48
5. American Cheese: 35, 49
6. Candle Wax: 33, 51
7. Chewing Gum: 38, 51
8. Plastic Wrap: 40, 60
9. Paper: 38, 72+
10. Duct Tape: 41, 85+
This thread seems to suggest some interesting options:
Take these suggestions with a pinch of salt. I'd just order more online.
On a recent assembly, my thermal paste was dried up so I ran without. Big No-No. I was pushing temps of 87 idle topping @ 106 before thermal overload and system shutdown.
I did some quick research and decided on 'Anti-Seize' as an alternative mainly because I had it on hand. I've been running for a week now on a 130 watt processor (as of July 29, 2015) with idle temps at 47 C & full load at 58 C.
Published Operating range is 5 - 68.6 C so I can live with those temps.