Synthetic Temperature Test Results: *Ranked according to 100W small interface die test results.

FrostyTech Synthetic Temperature Test Platform Results
Mfg.	Model	Ambient Temp.	27mm large copper block	15mm small copper block		27mm large copper block	15mm small copper block	Thermal pad	No. Fans	Fan Noise	Clip force
			50W	50W		100W	100W
Thermalright	SLK800	21.7	34.8	37.5		45.2	51.6	none	1	loud	med
Thermalright	AX-7	21.7	34.8	37.1		46.1	52.1	none	1	loud	med
Tocools	Novasonic	22.9	40.9	39.9		54.4	59.4	none	1	med	stiff
Globalwin	CAK4-86	25.7	36.6	44.3		47.0	60.6	none	1	high	eacy
Coolink	U1P2	26.1	39.4	44.9		50.9	62.2	none	2	loud	easy
Arkua	628	23.9	42.7	42.1		58.9	62.3	none	1	med	med
Thermal Integration	TI-V77L	26.5	39.1	44.4		57.5	63.6	grey	1	med	med
Sibak	AC02625B	23.2	41.3	59.0		43.2	64.7	none	1	loud	med
Coolink	U2P	27.1	40.6	47.6		55.3	67.6	none	1	loud	easy
Sibak	AC06725TH	22.5	42.9	46.2		61.7	67.7	none	1	Very loud	med
Globalwin	CAK4-88T	26.1	43.9	50.4		54.5	68.1	none	1	quiet	easy
Coolermaster	HHC-001	21.7	40.0	44.8		56.3	68.1	none	1	loud	easy
Globalwin	CAK4-76T	26.1	42.5	49.3		55.2	68.7	none	1	med	easy
Dynatron	DY1206BH-625	23.2	40.0	55.1		47.6	70.4	none	1	loud	stiff
Coolink	H2T	27.1	44.5	49.0		60.8	70.9	none	1	med	easy
Coolink	U1L2	26.1	42.3	51.1		57.9	72.2	none	2	med	easy
Vantec	CCK-6027D	27.4	45.4	49.6		64.9	73.4	none	1	med	med
Coolermaster	HSC-V62	21.4	47.4	52.8		61.7	74.5	none	1	quiet	easy
NengTyi	XPC5000	23.9	46.5	49.1		69.1	76.1	none	1	med	med
Coolink	U2L	27.1	45.6	52.6		62.7	76.2	none	1	med	easy
Spire	5F263	22.6	44.7	51.8		64.3	76.2	white	1	low	med
Titan	TTC-CU5TB	24.2	46.2	51.2		61.8	76.4	none	1	loud	stiff
Taisol	CGK760092	23.4	42.7	51.3		61.2	77.5	pink	1	low	med
Spire	5T235	22.3	43.0	50.3		62.8	78.1	white	1	med	med
Zalman	CNPS6000-Cu	24.8	46.4	53.8		65.6	78.2	none	1	very low	easy
AVC	112AM1	24.8	46.6	52.9		70.1	79.6	none	1	low	stiff
Coolink	H1T	27.1	49.2	53.6		69.4	79.9	none	1	med	easy
Sibak	AE01625B	23.5	40.8	54.4		57.1	81.0	none	1	loud	easy
Coolermaster	HHC-L61	21.5	47.2	48.3		71.2	82.3	none	1	quiet	easy
Thermaltake	Volcano 6cu+	26.5	40.3	55.3		58.6	84.4	carbon	1	loud	med
JMC Products	400023	23.1	44.5	65.2		55.3	85.2	Chomerics T725	1	low	easy
Sibak	AT01515B	23.0	45.1	64.6		60.1	95.2	none	2	med	stiff
Verax	P11T	26.1	61.2	69.7		90.9	102.7	none	1	none	easy
Verax	P14	26.1	56.9	67.4		81.6	101.2	none	1	none	easy
			50W	50W		100W	100W

Compared to its brother the Coolink U1P2 the Coolink U1L2 is substantially less powerful, though the underlying heatsink builds are virtually identical. Still the initial results are fairly respectable and should make this heatsink useful for standard clocked processors.

Rise Above Ambient Temp. (c)
Mfg.	Model	27mm large copper block	15mm small copper block		27mm large copper block	15mm small copper block
		50W	50W		100W	100W
Thermalright	SLK800	13.1	15.8		23.5	29.9
Thermalright	AX-7	13.1	15.4		24.4	30.4
Globalwin	CAK4-86	10.9	18.6		21.3	34.9
Coolink	U1P2	13.3	19.8		26.8	36.1
Tocools	Novasonic	18.0	17.0		31.5	36.5
Thermal Integration	TI-V77L	12.6	17.9		31.0	37.1
Arkua	628	18.8	18.2		35.0	38.4
Coolink	U2P	13.5	20.5		28.2	40.5
Sibak	AC02625B	18.1	35.8		20.0	41.5
Globalwin	CAK4-88T	17.8	24.3		28.4	42.0
Globalwin	CAK4-76T	16.4	23.2		29.1	42.6
Coolink	H2T	17.4	21.9		33.7	43.8
Sibak	AC06725TH	20.4	23.7		39.2	45.2
Vantec	CCK-6027D	18.0	22.2		37.5	46.0
Coolink	U1L2	16.2	25.0		31.8	46.1
Coolermaster	HHC-001	18.3	23.1		34.3	46.4
Dynatron	DY1206BH-625	16.8	31.9		24.4	47.2
Coolink	U2L	18.5	25.5		35.6	48.9
NengTyi	XPC5000	22.6	25.2		45.2	52.2
Titan	TTC-CU5TB	22.0	27.0		37.6	52.2
Coolink	H1T	22.1	26.5		42.3	52.8
Coolermaster	HSC-V62	26.0	31.4		40.3	53.1
Zalman	CNPS6000-Cu	21.6	29.0		40.8	53.4
Spire	5F263	22.1	29.2		41.7	53.6
Taisol	CGK760092	19.3	37.8		27.9	54.1
AVC	112AM1	21.8	28.1		45.3	54.8
Spire	5T235	20.7	28.0		40.5	55.8
Sibak	AE01625B	17.3	30.9		33.6	57.5
Thermaltake	Volcano 6cu+	13.8	28.8		32.1	57.9
Coolermaster	HHC-L61	25.7	26.8		49.7	60.8
JMC Products	400023	21.3	42.0		32.1	62.0
Sibak	AT01515B	22.1	41.6		37.1	72.2
Verax	P11T	35.1	43.6		64.8	76.6
Verax	P14	30.8	41.3		55.5	75.1
		50W	50W		100W	100W

In the end, the Coolink U1L2 from XTwerkz.com performed middle of the road - the two small 60mm fans only gave enough oomph to place it adjacent to smaller heatsinks which were largely made of all copper. Still, looking at the Coolink U1L2 on its own it does have the capability of scaling its performance to top of the line. That is assuming of course that you are willing to add in a set of louder fans to boost the performance. 

In the end, the Coolink U1L2 is a decent heatsink for non-overclocked systems where moderate noise is acceptable, and where there is sufficient room around the socket for the 120mm wide heatsink to be installed.

Related Articles:

Here are a few other articles that you might enjoy as well...

1. coolink U1P2 Heatsink
2. Taisol Copper-Base Heatsink
3. Eumax Copper 1U Heatsink Review
4. Thermal Integration TI-T707TN Heatsink
5. Coolsonic CS1662K Copper Skive Heatsink