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In November 2009, 44 systems appeared in the TOP500 list.

Rank System Procs Memory(GB) Rmax (GFlops) Rpeak (GFlops) Vendor
20 HECToR
Cray XT4, 2.3 GHz		 22656 N/A 174083 208435 Cray Inc.
33 Power 575, p6 4.7 GHz, Infiniband 8320 N/A 115900 156416 IBM
34 Power 575, p6 4.7 GHz, Infiniband 8320 N/A 115900 156416 IBM
74 iDataPlex, Xeon E55xx QC 2.26 GHz, Infiniband, Windows HPC2008 R2 8000 N/A 66680 72320 IBM
89 UKMO B
Power 575, p6 4.7 GHz, Infiniband		 3520 N/A 51863.3 66176 IBM
90 UKMO A
Power 575, p6 4.7 GHz, Infiniband		 3520 N/A 51863.3 66176 IBM
160 Cluster Platform 3000 BL460c G1, Xeon E5450 3.0 GHz, GigE 5512 N/A 35187 66144 HP
165 BladeCenter HS22 Cluster, Xeon QC GT 2.53 GHz, GigEthernet 6024 N/A 34772.5 60962.9 IBM
166 BladeCenter HS22 Cluster, Xeon QC GT 2.53 GHz, GigEthernet 6024 N/A 34772.5 60962.9 IBM
173 Cray XT3, 2.6 GHz dual Core 7812 N/A 33929.4 40622.4 Cray Inc.
203 Cluster Platform 3000 BL460c G1, Xeon L5420 2.5 GHz, GigE 5904 N/A 31361.6 59040 HP
209 Cluster Platform 3000 BL460c G1, Xeon L5420 2.5 GHz, GigE 5856 N/A 31112.2 58560 HP
220 Cluster Platform 3000 BL460c, Xeon 54xx 3.0GHz, GigEthernet 4768 N/A 30522.7 57216 HP
230 Cluster Platform 3000 BL460c, Xeon 54xx 3.0GHz, GigEthernet 4616 N/A 29566.5 55392 HP
240 BlueCrystal
xSeries x3450 Cluster Xeon quad core, 2.8 GHz, Infiniband		 3360 N/A 28775 37632 ClusterVision/IBM
261 Cluster Platform 3000 BL460c G1, Xeon E5450 3.0 GHz, GigE 4336 N/A 27802.2 52032 HP
262 Cluster Platform 3000 BL460c G1, Xeon E5440 2.83 GHz, GigE 4592 N/A 27748.5 51981.4 HP
285 Cluster Platform 3000 BL460c G1, Xeon L5420 2.5 GHz, Infiniband 3368 N/A 26667.7 33680 HP
286 Cluster Platform 3000 BL460c G5, Opteron 2352 2.1GHz, GigE 5952 N/A 26553.1 49996.8 HP
306 xSeries x3650 Cluster Xeon QC GT 2.66 GHz, Infiniband 2632 N/A 25752.5 28004 IBM
308 Cluster Platform 3000 BL460c G6, Xeon X5570 2.93 GHz, GigE 4096 N/A 25673.5 48005.1 HP
323 Cluster Platform 3000 BL460c, Xeon E54xx 2.83 GHz, GigEthernet 4128 N/A 24988 46729 HP
330 Cluster Platform 3000 BL460c, Xeon 54xx 3.0GHz, GigEthernet 3856 N/A 24768.8 46272 HP
353 BladeCenter HS21 Cluster, Xeon QC HT 2.66 GHz, GigEthernet 5744 N/A 24670 61277 IBM
376 Cluster Platform 3000 BL460c G1, Xeon L5420 2.5 GHz SP6852UK, GigE 4552 N/A 24302.9 45520 HP
382 Blue Gene/P Solution 8192 N/A 23862 27850 IBM
385 BladeCenter HS21 Cluster, Xeon QC HT 3 GHz, Infiniband 2656 N/A 23832 31872 IBM
386 Cluster Platform 3000 BL460c, Xeon 54xx 3.0GHz, GigEthernet 3704 N/A 23806 44448 HP
390 Cluster Platform 3000 BL460c, Xeon 54xx 3.0GHz, GigEthernet 3664 N/A 23552.4 43968 HP
396 xSeries x3550M2 Cluster Xeon QC GT 2.53 GHz, GigEthernet 4048 N/A 23366.4 40965.8 IBM
397 xSeries x3550M2 Cluster Xeon QC GT 2.53 GHz, GigEthernet 4048 N/A 23366.4 40965.8 IBM
421 Cluster Platform 3000 BL460c, Xeon 54xx 3.0GHz, GigEthernet 3600 N/A 23146.6 43200 HP
427 Cluster Platform 3000 BL460c, Xeon 54xx 3.0GHz, GigEthernet 3592 N/A 23095.8 43104 HP
436 Cluster Platform 3000 BL460c G1, Xeon E5440 2.83 GHz, GigE 3776 N/A 22887.4 42744.3 HP
442 Cluster Platform 3000 BL460c, Xeon 54xx 3.0GHz, GigEthernet 3480 N/A 22385 41760 HP
446 Cluster Platform 3000 BL460c G1, Xeon L5420 2.5 GHz, GigE 4108 N/A 21968.9 41080 HP
448 Cluster Platform 3000 BL460c G1, Xeon E5440 2.83 GHz, GigE 3616 N/A 21930.7 40933.1 HP
450 Cluster Platform 3000 BL460c, Xeon 54xx 2.5 GHz, GigEthernet 4096 N/A 21905.7 40960 HP
466 Cluster Platform 3000 BL460c, Xeon 54xx 3.0GHz, GigEthernet 3352 N/A 21572 40224 HP
475 Cluster Platform 3000 BL460c, Xeon E54xx 2.33 GHz, GigEthernet 4256 N/A 21201 39665.9 HP
489 Cluster Platform 3000 BL460c G1, Xeon E5440 2.83 GHz, GigE 3396 N/A 20613 38442.7 HP
490 Cluster Platform 3000 BL460c, Xeon 51xx 3.0GHz, GigEthernet 3200 N/A 20605.4 38400 HP
491 Cluster Platform 3000 BL460c, Xeon 51xx 3.0GHz, GigEthernet 3200 N/A 20605.4 38400 HP
499 Merlin
Novascale R422 Cluster, Xeon E5472, 3.00 GHz, Infiniband		 2048 4096 20120 24576 Bull