CPU Heat Dissipation Table

Return to Intel Programming

W/cm² describes how much wattage the CPU is dissipating through 1 cm² of die area. The higher that number goes, the harder it takes the heat sink to remove that heat - at reasonable speed.

Tr.density is "transistor density" measured in transistors per mm² die area. But remember that L2 cache is generally packed a lot more dense than the CPU core logic. Especially Intel pack their L2 caches very dense.

CPU Fab width
nm Core Voltage
V Speed
MHz Die size
mm² Transistors
mil Dissipation
Watts Current
Amps Watts
cm² Tr. density
tr./mm²

Alpha 21264 350 2.30 466 310 15.20 82 35 26.45 49032

Alpha 21264 350 2.30 500 310 15.20 91 39 29.35 49032

Alpha 21264 350 2.30 550 310 15.20 100 43 32.26 49032

Alpha 21264 350 2.30 575 310 15.20 107 46 34.68 49032

Alpha 21264 350 2.30 600 310 15.20 109 47 35.16 49032

AMD Athlon 250 1.60 500 184 22.00 42 26 22.83 119565

AMD Athlon 250 1.60 550 184 22.00 46 28 25.00 119565

AMD Athlon 250 1.60 600 184 22.00 50 31 27.17 119565

AMD Athlon 250 1.60 650 184 22.00 54 33 29.35 119565

AMD Athlon 250 1.60 700 184 22.00 50 31 27.17 119565

AMD Athlon 180 1.60 550 102 22.00 31 19 30.39 215686

AMD Athlon 180 1.60 600 102 22.00 34 21 33.33 215686

AMD Athlon 180 1.60 650 102 22.00 36 22 35.29 215686

AMD Athlon 180 1.60 700 102 22.00 39 24 38.24 215686

AMD Athlon 180 1.60 750 102 22.00 40 25 39.22 215686

AMD Athlon 180 1.70 800 102 22.00 48 28 47.06 215686

AMD Athlon 180 1.70 850 102 22.00 50 29 49.02 215686

AMD Athlon 180 1.80 900 102 22.00 60 33 58.82 215686

AMD Athlon 180 1.80 950 102 22.00 62 34 60.78 215686

AMD Athlon 180 1.80 1000 102 22.00 65 36 63.73 215686

AMD Duron 180 1.50 600 100 25.75 22 17 22.70 257500

AMD Duron 180 1.50 700 100 25.75 24 18 24.30 257500

AMD Duron 180 1.50 750 100 25.75 25 19 25.50 257500

AMD K6 350 2.90 166 157 8.80 17 5 10.96 56051

AMD K6 350 2.90 200 157 8.80 20 6 12.74 56051

AMD K6 350 3.20 233 157 8.80 28 8 18.03 56051

AMD K6 250 2.20 200 68 8.80 12 5 18.31 129412

AMD K6 250 2.20 233 68 8.80 13 6 19.85 129412

AMD K6 250 2.20 266 68 8.80 14 6 21.40 129412

AMD K6 250 2.20 300 68 8.80 15 7 22.65 129412

AMD K6 2 250 2.20 266 81 9.30 14 6 18.15 114815

AMD K6 2 250 2.20 300 81 9.30 17 7 21.23 114815

AMD K6 2 250 2.20 333 81 9.30 19 8 23.46 114815

AMD K6 2 250 2.20 350 81 9.30 19 9 24.63 114815

AMD K6 2 250 2.20 366 81 9.30 20 9 25.68 114815

AMD K6 2 250 2.20 380 81 9.30 21 9 26.67 114815

AMD K6 2 250 2.40 400 81 9.30 22 9 28.02 114815

AMD K6 2 250 2.40 450 81 9.30 28 11 35.06 114815

AMD K6 2 250 2.40 475 81 9.30 29 12 36.54 114815

AMD K6 2 250 2.20 400 81 9.30 16 7 20.86 114815

AMD K6 2 250 2.20 450 81 9.30 18 8 23.21 114815

AMD K6 2 250 2.20 475 81 9.30 19 9 24.44 114815

AMD K6 2 250 2.20 500 81 9.30 20 9 25.62 114815

AMD K6 3 250 2.20 400 118 21.30 18 8 15.34 180508

AMD K6 3 250 2.20 450 118 21.30 20 9 17.12 180508

AMD K6 3 250 2.40 400 118 21.30 26 11 22.71 180508

AMD K6 3 250 2.40 450 118 21.30 29 12 25.00 180508

AMD Thunderbird 180 1.70 650 120 37.00 36 21 30.08 308333

AMD Thunderbird 180 1.70 700 120 37.00 38 22 31.92 308333

AMD Thunderbird 180 1.70 750 120 37.00 40 23 33.67 308333

AMD Thunderbird 180 1.70 800 120 37.00 42 25 35.50 308333

AMD Thunderbird 180 1.70 850 120 37.00 44 26 37.33 308333

AMD Thunderbird 180 1.75 900 120 37.00 49 28 41.42 308333

AMD Thunderbird 180 1.75 950 120 37.00 52 29 43.33 308333

AMD Thunderbird 180 1.75 1000 120 37.00 54 31 45.25 308333

Intel Celeron 250 2.00 300 154 19.00 18 9 11.56 123377

Intel Celeron 250 2.00 333 154 19.00 20 10 12.79 123377

Intel Celeron 250 2.00 366 154 19.00 22 11 14.09 123377

Intel Celeron 250 2.00 400 154 19.00 24 12 15.39 123377

Intel Celeron 250 2.00 433 154 19.00 24 12 15.65 123377

Intel Celeron 250 2.00 466 154 19.00 26 13 16.62 123377

Intel Celeron 250 2.00 500 154 19.00 27 14 17.53 123377

Intel Celeron 250 2.00 533 154 19.00 28 14 18.38 123377

Intel Celeron 180 1.50 533 105 28.10 17 11 23.60 267619

Intel Celeron 180 1.50 566 105 28.10 18 12 24.70 267619

Intel Celeron 180 1.50 600 105 28.10 18 12 24.80 267619

Intel Pentium 3 250 2.00 450 125 9.50 25 12 20.24 76000

Intel Pentium 3 250 2.00 500 125 9.50 28 14 22.40 76000

Intel Pentium 3 250 2.00 550 125 9.50 30 15 24.64 76000

Intel Pentium 3 250 2.00 600 125 9.50 34 17 27.60 76000

Intel Pentium 3 180 1.65 650 105 28.10 21 13 20.48 267619

Intel Pentium 3 180 1.65 667 105 28.10 22 13 20.95 267619

Intel Pentium 3 180 1.65 700 105 28.10 23 14 22.00 267619

Intel Pentium 3 180 1.65 733 105 28.10 24 15 22.95 267619

Intel Pentium 3 180 1.65 750 105 28.10 24 15 23.52 267619

Intel Pentium 3 180 1.65 800 105 28.10 26 16 25.14 267619

Intel Pentium 3 B 250 2.05 533 125 9.50 29 14 23.76 76000

Intel Pentium 3 B 250 2.00 600 125 9.50 34 17 27.60 76000

Intel Pentium 3 E 180 1.60 550 105 28.10 18 11 17.33 267619

Intel Pentium 3 E 180 1.65 600 105 28.10 19 12 18.86 267619

Intel Pentium 3 EB 180 1.65 533 105 28.10 17 11 16.76 267619

Intel Pentium 3 EB 180 1.65 600 105 28.10 19 12 18.86 267619

Intel Pentium 3 EB 180 1.65 800 105 28.10 26 16 25.14 267619

Intel Pentium 3 EB 180 1.70 1000 105 28.10 33 19 31.43 267619

Motorola 7400 (G4) 200 1.80 350 83 10.50 10 6 13.13 126506

Motorola 7400 (G4) 200 1.80 400 83 10.50 11 6 13.86 126506

Motorola 750A (G3) 290 2.60 200 67 6.35 6 2 8.96 94776

Motorola 750A (G3) 290 2.60 233 67 6.35 7 2 10.45 94776

Motorola 750A (G3) 290 2.60 266 67 6.35 7 3 11.79 94776

CPU	Fab width nm	Core Voltage V	Speed MHz	Die size mm²	Transistors mil	Dissipation Watts	Current Amps	Watts cm²	Tr. density tr./mm²
Alpha 21264	350	2.30	466	310	15.20	82	35	26.45	49032
Alpha 21264	350	2.30	500	310	15.20	91	39	29.35	49032
Alpha 21264	350	2.30	550	310	15.20	100	43	32.26	49032
Alpha 21264	350	2.30	575	310	15.20	107	46	34.68	49032
Alpha 21264	350	2.30	600	310	15.20	109	47	35.16	49032
AMD Athlon	250	1.60	500	184	22.00	42	26	22.83	119565
AMD Athlon	250	1.60	550	184	22.00	46	28	25.00	119565
AMD Athlon	250	1.60	600	184	22.00	50	31	27.17	119565
AMD Athlon	250	1.60	650	184	22.00	54	33	29.35	119565
AMD Athlon	250	1.60	700	184	22.00	50	31	27.17	119565
AMD Athlon	180	1.60	550	102	22.00	31	19	30.39	215686
AMD Athlon	180	1.60	600	102	22.00	34	21	33.33	215686
AMD Athlon	180	1.60	650	102	22.00	36	22	35.29	215686
AMD Athlon	180	1.60	700	102	22.00	39	24	38.24	215686
AMD Athlon	180	1.60	750	102	22.00	40	25	39.22	215686
AMD Athlon	180	1.70	800	102	22.00	48	28	47.06	215686
AMD Athlon	180	1.70	850	102	22.00	50	29	49.02	215686
AMD Athlon	180	1.80	900	102	22.00	60	33	58.82	215686
AMD Athlon	180	1.80	950	102	22.00	62	34	60.78	215686
AMD Athlon	180	1.80	1000	102	22.00	65	36	63.73	215686
AMD Duron	180	1.50	600	100	25.75	22	17	22.70	257500
AMD Duron	180	1.50	700	100	25.75	24	18	24.30	257500
AMD Duron	180	1.50	750	100	25.75	25	19	25.50	257500
AMD K6	350	2.90	166	157	8.80	17	5	10.96	56051
AMD K6	350	2.90	200	157	8.80	20	6	12.74	56051
AMD K6	350	3.20	233	157	8.80	28	8	18.03	56051
AMD K6	250	2.20	200	68	8.80	12	5	18.31	129412
AMD K6	250	2.20	233	68	8.80	13	6	19.85	129412
AMD K6	250	2.20	266	68	8.80	14	6	21.40	129412
AMD K6	250	2.20	300	68	8.80	15	7	22.65	129412
AMD K6 2	250	2.20	266	81	9.30	14	6	18.15	114815
AMD K6 2	250	2.20	300	81	9.30	17	7	21.23	114815
AMD K6 2	250	2.20	333	81	9.30	19	8	23.46	114815
AMD K6 2	250	2.20	350	81	9.30	19	9	24.63	114815
AMD K6 2	250	2.20	366	81	9.30	20	9	25.68	114815
AMD K6 2	250	2.20	380	81	9.30	21	9	26.67	114815
AMD K6 2	250	2.40	400	81	9.30	22	9	28.02	114815
AMD K6 2	250	2.40	450	81	9.30	28	11	35.06	114815
AMD K6 2	250	2.40	475	81	9.30	29	12	36.54	114815
AMD K6 2	250	2.20	400	81	9.30	16	7	20.86	114815
AMD K6 2	250	2.20	450	81	9.30	18	8	23.21	114815
AMD K6 2	250	2.20	475	81	9.30	19	9	24.44	114815
AMD K6 2	250	2.20	500	81	9.30	20	9	25.62	114815
AMD K6 3	250	2.20	400	118	21.30	18	8	15.34	180508
AMD K6 3	250	2.20	450	118	21.30	20	9	17.12	180508
AMD K6 3	250	2.40	400	118	21.30	26	11	22.71	180508
AMD K6 3	250	2.40	450	118	21.30	29	12	25.00	180508
AMD Thunderbird	180	1.70	650	120	37.00	36	21	30.08	308333
AMD Thunderbird	180	1.70	700	120	37.00	38	22	31.92	308333
AMD Thunderbird	180	1.70	750	120	37.00	40	23	33.67	308333
AMD Thunderbird	180	1.70	800	120	37.00	42	25	35.50	308333
AMD Thunderbird	180	1.70	850	120	37.00	44	26	37.33	308333
AMD Thunderbird	180	1.75	900	120	37.00	49	28	41.42	308333
AMD Thunderbird	180	1.75	950	120	37.00	52	29	43.33	308333
AMD Thunderbird	180	1.75	1000	120	37.00	54	31	45.25	308333
Intel Celeron	250	2.00	300	154	19.00	18	9	11.56	123377
Intel Celeron	250	2.00	333	154	19.00	20	10	12.79	123377
Intel Celeron	250	2.00	366	154	19.00	22	11	14.09	123377
Intel Celeron	250	2.00	400	154	19.00	24	12	15.39	123377
Intel Celeron	250	2.00	433	154	19.00	24	12	15.65	123377
Intel Celeron	250	2.00	466	154	19.00	26	13	16.62	123377
Intel Celeron	250	2.00	500	154	19.00	27	14	17.53	123377
Intel Celeron	250	2.00	533	154	19.00	28	14	18.38	123377
Intel Celeron	180	1.50	533	105	28.10	17	11	23.60	267619
Intel Celeron	180	1.50	566	105	28.10	18	12	24.70	267619
Intel Celeron	180	1.50	600	105	28.10	18	12	24.80	267619
Intel Pentium 3	250	2.00	450	125	9.50	25	12	20.24	76000
Intel Pentium 3	250	2.00	500	125	9.50	28	14	22.40	76000
Intel Pentium 3	250	2.00	550	125	9.50	30	15	24.64	76000
Intel Pentium 3	250	2.00	600	125	9.50	34	17	27.60	76000
Intel Pentium 3	180	1.65	650	105	28.10	21	13	20.48	267619
Intel Pentium 3	180	1.65	667	105	28.10	22	13	20.95	267619
Intel Pentium 3	180	1.65	700	105	28.10	23	14	22.00	267619
Intel Pentium 3	180	1.65	733	105	28.10	24	15	22.95	267619
Intel Pentium 3	180	1.65	750	105	28.10	24	15	23.52	267619
Intel Pentium 3	180	1.65	800	105	28.10	26	16	25.14	267619
Intel Pentium 3 B	250	2.05	533	125	9.50	29	14	23.76	76000
Intel Pentium 3 B	250	2.00	600	125	9.50	34	17	27.60	76000
Intel Pentium 3 E	180	1.60	550	105	28.10	18	11	17.33	267619
Intel Pentium 3 E	180	1.65	600	105	28.10	19	12	18.86	267619
Intel Pentium 3 EB	180	1.65	533	105	28.10	17	11	16.76	267619
Intel Pentium 3 EB	180	1.65	600	105	28.10	19	12	18.86	267619
Intel Pentium 3 EB	180	1.65	800	105	28.10	26	16	25.14	267619
Intel Pentium 3 EB	180	1.70	1000	105	28.10	33	19	31.43	267619
Motorola 7400 (G4)	200	1.80	350	83	10.50	10	6	13.13	126506
Motorola 7400 (G4)	200	1.80	400	83	10.50	11	6	13.86	126506
Motorola 750A (G3)	290	2.60	200	67	6.35	6	2	8.96	94776
Motorola 750A (G3)	290	2.60	233	67	6.35	7	2	10.45	94776
Motorola 750A (G3)	290	2.60	266	67	6.35	7	3	11.79	94776