840:
795:
734:
27:
1096:
376:
819:. This was done to avoid the reputed danger of the heat sinks/fans of pre-built computers falling off in transit. LGA 775 was announced to have better heat dissipation properties than the Socket 478 it was designed to replace, but the Prescott core CPUs (in their early incarnations) ran much hotter than the previous Northwood-core
935:
generally following the release of contemporary CPUs, as LGA 775 CPU support is a complicated mixture of chipset capability, voltage regulator limitations and BIOS support. For example, the newer Q45 chipset does not support NetBurst-based CPUs such as the
Pentium 4, Pentium D, Pentium Extreme Edition, and Celeron D.
830:
Processors with lower TDP and clock speeds only used
Thermal Interface Compound in between the die and the integrated heat spreader (IHS), while processors with higher TDP and clock speeds have the die soldered directly to the IHS, allowing for better heat transfer between the CPU and the integrated
934:
Intermediate chipsets (e.g. Intel 945) commonly support both single core
Pentium 4-based CPUs as well as dual core Pentium D processors. Some motherboards using the 945 chipset could be given a BIOS upgrade to support 65nm Core-based processors. Other chipsets have varying levels of CPU support,
472:
was the last Intel socket for desktops for which third-party companies manufactured chipsets. Nvidia was the last third-party manufacturer of LGA 775 chipsets (its final product was MCP7A family, marketed as GeForce 9300/9400, launched in
October 2008), as other third-parties discontinued their
810:
or cold-water block fixed onto the top of the CPU to carry away the heat generated by the CPU. This socket also introduces a new method of connecting the heat dissipation interface to the chip surface and motherboard. With LGA 775, the heat dissipation interface is connected directly to the
854:
All LGA 775 processors have the following mechanical maximum load limits which should not be exceeded during heat sink assembly, shipping conditions, or standard use. Load above those limits could crack the processor die and make it unusable. The limits are included in the table below.
481:
processors, also launched in 2011, were usually paired with motherboard with AMD chipsets, but some motherboards using third-party chipsets were also manufactured, usually with Nvidia chipsets, as the Socket AM3+ design was directly extended from the earlier
441:
For LGA 775, the distance between the screw-holes for the heatsink is 72 mm. Such heat-sinks are not interchangeable with heatsinks for sockets that have a distance of 75 mm, such as
359:
The socket had an unusually long life span, lasting 7 years until the last processors supporting it ceased production in 2011. The socket was superseded by the
669:
473:
products earlier. All chipsets for superseding sockets were exclusively designed and manufactured by Intel, a practice later also adopted by
999:
1128:
806:
The force from the load plate ensures that the processor is completely level, giving the CPU's upper surface optimal contact with the
1030:
383:(Note: Some of the processors listed here might not work on newer Intel based chipsets; see "LGA 775 compatibility" below.)
969:
952:
1059:
345:, LGA 775 has no socket holes; instead, it has 775 protruding pins which touch contact points on the underside of the
781:
763:
1121:
974:
759:
500:
979:
903:
The transition to the LGA packaging has lowered those load limits, which are smaller than the load limits of
927:
Compatibility is quite variable, as earlier chipsets (Intel 915 and below) tend to support only single core
1100:
951:. However, more recent hypervisors might not be compatible with these CPUs because they lack support for
1674:
1114:
527:
352:
Intel started selling LGA 775 (Socket T) CPUs with the 64-bit version of their 90 nm "Prescott"-based
617:
392:
177:
964:
755:
744:
848:
748:
416:
346:
1010:
919:
processors, which were fragile. They are large enough to ensure that processors will not crack.
823:
CPUs, and this initially neutralized the benefits of better heat transfer. However, the later
65:
839:
8:
509:
Broadwater: i955X / i946 / 946GZ / PL / 965 / i975 / Q965 / P965 / G965 / Q963 / i975X
411:
200:
1038:
629:
570:
1437:
1351:
1206:
1106:
322:
61:
827:
processors run at much lower temperatures than the
Prescott CPUs they replaced.
1648:
1602:
1412:
1393:
1175:
1156:
887:
430:
338:
103:
92:
1668:
876:
1069:
824:
794:
620:
and PCI-Express at the same time, but only one port can be used at a time.
478:
218:
212:
206:
168:
880:
512:
Bearlake: X35 / P35 / Q35 / G35 / P33 / G33 / Q33 / P31 / G31 / X38 / X48
425:
1599:
1426:
1420:
1321:
1316:
1311:
1195:
1189:
1183:
1137:
948:
912:
908:
904:
816:
812:
799:
483:
421:
342:
334:
308:
298:
294:
250:
506:
Lakeport: 945PL / 945P / 945G / 945GC / 945GZ / 955X / 946PL / 946GZ P
1345:
1339:
844:
820:
807:
406:
397:
387:
353:
193:
187:
159:
76:
733:
1642:
1636:
1630:
1625:
1620:
1615:
1610:
1583:
1547:
1541:
1535:
1529:
1523:
1517:
1511:
1505:
1499:
1493:
1487:
1481:
1475:
1469:
1463:
1457:
1451:
1372:
1333:
1327:
1280:
1274:
1268:
1262:
1256:
1250:
1244:
1238:
1232:
1226:
1220:
928:
916:
458:
454:
450:
446:
442:
364:
360:
280:
274:
26:
1562:
1445:
811:
motherboard on four points, compared with the two connections of
402:
260:
236:
1577:
1571:
1401:
1164:
1095:
1064:
944:
651:
1306:
1301:
1141:
375:
330:
233:
224:
184:
174:
165:
156:
1383:
227:
474:
515:
Eaglelake: P45 / P43 / G45 / G43 / G41 / B43 / Q43 / Q45
283:(high-end desktops and some low-end to mid-end servers)
931:
Pentium 4 and
Celeron CPUs at an FSB of 533/800 MT/s.
1653:
non-Intel modification of the original Intel Socket 7
723:
1136:
843:The LGA 775 contact points on the underside of a
834:
1666:
938:
1122:
815:and the "clamshell" four-point connection of
501:List of Intel chipsets § Core 2 chipsets
1025:
1023:
947:and other LGA 775 processors are capable of
802:E7500 2.93 GHz installed into LGA 775 socket
762:. Unsourced material may be challenged and
1129:
1115:
1020:
782:Learn how and when to remove this message
922:
838:
793:
374:
1031:"New P4 Socket Type LGA 775 (Socket T)"
477:when they first launched APUs in 2011 (
1667:
1110:
370:
341:CPU sockets, such as its predecessor
907:processors but they are bigger than
760:adding citations to reliable sources
727:
949:hardware-accelerated virtualization
13:
970:List of Intel Pentium 4 processors
494:
436:
14:
1686:
1088:
1052:
1094:
1060:"ASRock > Motherboard Series"
732:
724:Improvements in heat dissipation
25:
975:List of Intel Core 2 processors
992:
835:LGA 775 mechanical load limits
277:(desktops and low-end servers)
1:
985:
980:List of Intel Xeon processors
307:This article is part of the
7:
1000:"Intel Pentium 4 Datasheet"
958:
939:Virtualization capabilities
464:
379:A selection of LGA 775 CPUs
10:
1691:
649:
627:
568:
528:Silicon Integrated Systems
525:
498:
1597:
1561:
1436:
1411:
1392:
1382:
1368:
1361:
1294:
1205:
1174:
1155:
1148:
866:
863:
860:
645:
641:ATI CrossFire Xpress 3200
393:Pentium 4 Extreme Edition
304:
290:
267:
256:
246:
178:Pentium 4 Extreme Edition
149:
139:
131:
102:
91:
83:
72:
57:
49:
41:
33:
24:
965:List of Intel processors
616:PT880 Pro also supports
489:
16:Intel desktop CPU socket
417:Pentium Extreme Edition
194:Pentium Extreme Edition
79:land grid array (FCLGA)
851:
803:
638:ATI Radeon Xpress 1250
623:
564:
521:
380:
1138:CPU sockets and slots
1016:on February 24, 2008.
923:LGA 775 compatibility
842:
797:
650:Further information:
635:ATI Radeon Xpress 200
628:Further information:
569:Further information:
526:Further information:
499:Further information:
378:
197: (3.20–3.73 GHz)
181: (3.40–3.73 GHz)
1103:at Wikimedia Commons
1041:on December 13, 2007
953:Extended Page Tables
756:improve this section
367:(Socket B) sockets.
325:775), also known as
219:Intel Core 2 Extreme
140:Processor dimensions
66:Zero insertion force
124:400 MHz (1600 MT/s)
121:333 MHz (1333 MT/s)
118:266 MHz (1066 MT/s)
21:
852:
804:
692:nForce 680i LT SLI
381:
371:LGA 775 processors
115:200 MHz (800 MT/s)
112:133 MHz (533 MT/s)
19:
1675:Intel CPU sockets
1662:
1661:
1593:
1592:
1557:
1556:
1290:
1289:
1099:Media related to
901:
900:
893:311 N (70 lb
792:
791:
784:
686:nForce 650i Ultra
412:Pentium Dual-Core
316:
315:
213:Intel Core 2 Quad
201:Pentium Dual-Core
143:37.5mm x 37.5mm
73:Chip form factors
1682:
1390:
1389:
1366:
1365:
1153:
1152:
1131:
1124:
1117:
1108:
1107:
1098:
1082:
1081:
1079:
1077:
1072:on 15 March 2015
1068:. Archived from
1056:
1050:
1049:
1047:
1046:
1037:. Archived from
1027:
1018:
1017:
1015:
1009:. Archived from
1004:
996:
858:
857:
787:
780:
776:
773:
767:
736:
728:
630:ATI Technologies
571:VIA Technologies
207:Intel Core 2 Duo
29:
22:
18:
1690:
1689:
1685:
1684:
1683:
1681:
1680:
1679:
1665:
1664:
1663:
1658:
1589:
1553:
1432:
1407:
1378:
1357:
1286:
1201:
1170:
1149:Desktop sockets
1144:
1135:
1091:
1086:
1085:
1075:
1073:
1058:
1057:
1053:
1044:
1042:
1029:
1028:
1021:
1013:
1002:
998:
997:
993:
988:
961:
941:
925:
896:
884:
837:
831:heat spreader.
788:
777:
771:
768:
753:
737:
726:
713:nForce 790i SLI
710:nForce 780i SLI
707:nForce 760i SLI
704:nForce 750i SLI
701:nForce 740i SLI
695:nForce 680i SLI
689:nForce 650i SLI
666:nForce4 SLI X16
654:
648:
632:
626:
573:
567:
530:
524:
516:
503:
497:
495:Core 2 Chipsets
492:
467:
439:
437:Heatsink design
373:
363:(Socket H) and
323:land grid array
305:
297:
286:
242:
239:(1.60–2.40 GHz)
230:(1.86–3.40 GHz)
221:(2.66–3.20 GHz)
215:(2.33–3.00 GHz)
209:(1.60–3.33 GHz)
203:(1.40–3.33 GHz)
196:
190:(2.66–3.60 GHz)
180:
171:(2.53–3.60 GHz)
162:(2.66–3.80 GHz)
144:
127:
62:Land grid array
50:Manufactured by
17:
12:
11:
5:
1688:
1678:
1677:
1660:
1659:
1657:
1656:
1649:Super Socket 7
1646:
1640:
1634:
1628:
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1605:
1595:
1594:
1591:
1590:
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1566:
1559:
1558:
1555:
1554:
1552:
1551:
1545:
1539:
1533:
1527:
1521:
1520:(R4 2017–2019)
1515:
1509:
1503:
1497:
1491:
1485:
1479:
1473:
1467:
1461:
1455:
1449:
1442:
1440:
1434:
1433:
1431:
1430:
1424:
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1406:
1405:
1398:
1396:
1387:
1380:
1379:
1377:
1376:
1369:
1363:
1362:Server sockets
1359:
1358:
1356:
1355:
1349:
1343:
1337:
1331:
1325:
1319:
1314:
1309:
1304:
1298:
1296:
1295:Mobile sockets
1292:
1291:
1288:
1287:
1285:
1284:
1278:
1272:
1271:(H5 2020–2021)
1266:
1265:(R4 2017–2019)
1260:
1259:(H4 2015–2019)
1254:
1253:(R3 2014–2016)
1248:
1247:(H3 2013–2014)
1242:
1241:(H2 2011–2012)
1236:
1230:
1229:(H1 2009–2010)
1224:
1218:
1211:
1209:
1203:
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1111:
1105:
1104:
1090:
1089:External links
1087:
1084:
1083:
1051:
1035:asisupport.com
1019:
990:
989:
987:
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711:
708:
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699:
696:
693:
690:
687:
684:
681:
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675:
674:nForce 590 SLI
672:
670:nForce 570 SLI
667:
664:
661:
660:nForce4 SLI XE
658:
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431:Core 2 Extreme
428:
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291:Memory support
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1315:
1313:
1310:
1308:
1305:
1303:
1300:
1299:
1297:
1293:
1282:
1279:
1277:(V 2021–2023)
1276:
1273:
1270:
1267:
1264:
1261:
1258:
1255:
1252:
1249:
1246:
1243:
1240:
1237:
1235:(R 2011–2013)
1234:
1231:
1228:
1225:
1223:(B 2008–2010)
1222:
1219:
1217:(T 2004–2009)
1216:
1213:
1212:
1210:
1208:
1204:
1198:(N 2001–2004)
1197:
1194:
1192:(W 2000–2001)
1191:
1188:
1185:
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746:
741:This section
739:
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694:
691:
688:
685:
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665:
662:
659:
657:nForce4 Ultra
656:
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142:
138:
135:1.2 V - 1.5 V
134:
132:Voltage range
130:
123:
120:
117:
114:
111:
110:
108:
105:
101:
97:
94:
90:
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82:
78:
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71:
67:
63:
60:
56:
52:
48:
44:
40:
36:
32:
28:
23:
1652:
1651:(1996–1999;
1214:
1074:. Retrieved
1070:the original
1063:
1054:
1043:. Retrieved
1039:the original
1034:
1011:the original
1006:
994:
942:
933:
926:
902:
872:IHS Surface
853:
829:
805:
778:
769:
754:Please help
742:
719:GeForce 9400
716:GeForce 9300
663:nForce4 SLI;
615:
469:
468:
440:
382:
358:
354:Pentium 4 HT
351:
326:
318:
317:
306:
34:Release date
1645:(1995–1997)
1639:(1994–1995)
1603:PGA Sockets
1429:(2002–2007)
1423:(2001–2004)
1404:(1998–2000)
1186:(1998–2001)
1167:(1996–1999)
698:nForce 730i
683:nForce 630i
680:nForce 620i
677:nForce 610i
597:PT880 Ultra
479:Socket AM3+
426:Core 2 Quad
247:Predecessor
42:Designed by
1600:Pentium II
1565:processors
1386:processors
1322:Socket 479
1317:Socket 495
1312:Socket 615
1101:Socket 775
1045:2007-03-14
986:References
913:Socket 423
909:Socket 370
905:Socket 478
897:) (31 kp)
817:Socket 478
813:Socket 370
800:Core 2 Duo
772:March 2018
591:P4M800 Pro
484:Socket AM3
422:Core 2 Duo
343:Socket 478
335:CPU socket
309:CPU socket
263:(Socket J)
251:Socket 478
150:Processors
145:1,406.25mm
1532:(P5 2020)
1508:(H4 2015)
1502:(R3 2014)
1496:(R2 2014)
1490:(H3 2013)
1484:(B2 2012)
1472:(H2 2011)
1466:(LS 2010)
1460:(H1 2009)
1352:Socket G3
1346:Socket G2
1340:Socket G1
1283:(V1 2024)
861:Location
847:Prescott
845:Pentium 4
821:Pentium 4
808:heat sink
743:does not
603:PT894 Pro
594:PT880 Pro
486:design).
407:Celeron D
398:Pentium D
388:Pentium 4
347:processor
337:. Unlike
268:Successor
188:Pentium D
169:Celeron D
160:Pentium 4
106:frequency
77:Flip-chip
68:(LGA-ZIF)
1669:Category
1643:Socket 7
1637:Socket 5
1631:Socket 4
1626:Socket 6
1621:Socket 3
1616:Socket 2
1611:Socket 1
1538:(E 2023)
1514:(P 2016)
1478:(R 2011)
1454:(B 2008)
1448:(J 2006)
1373:Socket 8
1334:Socket P
1328:Socket M
1076:15 March
959:See also
929:NetBurst
917:Socket A
864:Dynamic
465:Chipsets
459:LGA 1200
455:LGA 1151
451:LGA 1150
447:LGA 1155
443:LGA 1156
365:LGA 1366
361:LGA 1156
333:desktop
329:, is an
327:Socket T
281:LGA 1366
275:LGA 1156
95:protocol
84:Contacts
1563:Itanium
867:Static
764:removed
749:sources
533:SiS 649
517:945PLS3
470:LGA 775
403:Celeron
349:(CPU).
319:LGA 775
261:LGA 771
257:Variant
237:Celeron
20:LGA 775
1633:(1993)
1586:(2010)
1580:(2002)
1574:(2001)
1550:(2024)
1544:(2024)
1526:(2020)
1500:2011-3
1494:2011-1
1402:Slot 2
1375:(1995)
1354:(2013)
1348:(2011)
1342:(2009)
1336:(2007)
1330:(2006)
1324:(2001)
1251:2011-3
1165:Slot 1
1065:ASRock
945:Core 2
886:) (77
825:Core 2
798:Intel
652:Nvidia
646:Nvidia
612:P4M900
606:P4M890
588:P4M800
311:series
1307:MMC-2
1302:MMC-1
1142:Intel
1014:(PDF)
1007:Intel
1003:(PDF)
943:Some
879:(170
609:PT890
600:PT894
585:PM880
582:PT880
579:PM800
576:PT800
557:671DX
554:671FX
545:656FX
536:649FX
490:Intel
331:Intel
234:Intel
225:Intel
185:Intel
175:Intel
166:Intel
157:Intel
98:AGTL+
53:Intel
45:Intel
1598:Pre-
1584:1248
1548:7529
1542:4710
1536:4677
1530:4189
1524:1200
1518:2066
1512:3647
1506:1151
1488:1150
1482:1356
1476:2011
1470:1155
1464:1567
1458:1156
1452:1366
1394:Slot
1384:Xeon
1281:1851
1275:1700
1269:1200
1263:2066
1257:1151
1245:1150
1239:1155
1233:2011
1227:1156
1221:1366
1157:Slot
1078:2015
915:and
875:756
747:any
745:cite
457:and
299:DDR3
295:DDR2
228:Xeon
58:Type
37:2004
1578:611
1572:418
1446:771
1438:LGA
1427:604
1421:603
1413:PGA
1215:775
1207:LGA
1196:478
1190:423
1184:370
1176:PGA
1140:by
849:CPU
758:by
624:ATI
618:AGP
565:VIA
560:672
551:671
548:662
542:656
539:655
522:SiS
475:AMD
339:PGA
104:FSB
93:FSB
87:775
1671::
1062:.
1033:.
1022:^
1005:.
955:.
911:,
890:)
888:kp
881:lb
461:.
453:,
449:,
445:,
356:.
1655:)
1130:e
1123:t
1116:v
1080:.
1048:.
895:f
883:f
877:N
785:)
779:(
774:)
770:(
766:.
752:.
424:/
405:/
321:(
64:-
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