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In June 2008, 53 systems appeared in the TOP500 list.

Rank System Procs Memory(GB) Rmax (GFlops) Rpeak (GFlops) Vendor
19 Power 575, p6 4.7 GHz, Infiniband 8320 N/A 80320 156416 IBM
30 HECToR
Cray XT4, 2.8 GHz		 11328 33200 54648 63436.8 Cray Inc.
56 Cray XT3, 2.6 GHz dual Core 7812 N/A 33929.4 40622.4 Cray Inc.
67 BlueCrystal
xSeries x3450 Cluster Xeon quad core, 2.8 GHz, Infiniband		 3360 N/A 28775 37632 ClusterVision/IBM
86 BladeCenter JS21 Cluster, PPC 970, 2.5 GHz, Myrinet 2800 N/A 20051 28000 IBM
89 Merlin
Novascale R422 Cluster, Xeon E5472, 3.00 GHz, Infiniband		 2048 4096 20000 24576 Bull
100 PowerEdge 1950, Xeon 51xx 3.06 GHz, Infinipath 1992 8192 18930 24382 ClusterVision/Dell
109 BladeCenter HS21 Cluster, Xeon dual core, 3.0 GHz, GigEthernet 3840 N/A 18600 46080 IBM
113 Darwin
PowerEdge 1950, 3.0 GHz, Infinipath		 2340 N/A 18270 28080 ClusterVision/Dell
121 Cluster Platform 3000 BL460c, Xeon 54xx 3.0GHz, GigEthernet 2704 N/A 17567.1 32448 HP
129 BladeCenter HS21 Cluster, Xeon dual core 2.66 GHz, GigEthernet 3528 N/A 17088.8 37636.7 IBM
140 eServer pSeries p5 575 1.9 GHz 2480 N/A 16202 18848 IBM
141 eServer pSeries p5 575 1.9 GHz 2480 N/A 16202 18848 IBM
143 Cluster Platform 3000 BL460c, Xeon 54xx 3.0GHz, GigEthernet 2432 N/A 16101.2 29184 HP
152 Cluster Platform 3000 BL460c, Xeon 54xx 3.0GHz, GigEthernet 2384 N/A 15835.5 28608 HP
153 Cluster Platform 3000 BL460c, Xeon 54xx 3.0GHz, GigEthernet 2384 N/A 15835.5 28608 HP
160 Cluster Platform 3000 BL460c, Xeon 54xx 3.0GHz, GigEthernet 2368 N/A 15746.5 28416 HP
183 BladeCenter LS20, Opteron 2.2 GHz Dual core, GigEthernet 6000 N/A 14775 26400 IBM
213 Cluster Platform 3000 BL460c, Xeon 53xx 2.33GHz, GigEthernet 2768 N/A 13904.1 25797.8 HP
242 Cluster Platform 4000 BL465c, Opteron DC 2.4GHz, GigEthernet 5200 N/A 13423.5 24960 HP
245 Cluster Platform 3000 BL460c, Xeon 53xx 1.86GHz, GigEthernet 3328 N/A 13280 24760.3 HP
247 Cluster Platform 3000 BL460c, Xeon 54xx 2.83 GHz, GigEthernet 2064 N/A 13216.8 23364.5 HP
248 Cluster Platform 3000 BL460c, Xeon 54xx 2.83 GHz, GigEthernet 2064 N/A 13216.8 23364.5 HP
253 Cluster Platform 3000 BL460c, Xeon 54xx 3.0GHz, GigEthernet 1912 N/A 13113 22944 HP
263 eServer pSeries p5 575 1.5 GHz 2560 N/A 12940 15360 IBM
280 BladeCenter LS20, Opteron 2.2 GHz Dual core, GigEthernet 5000 N/A 12312 22000 IBM
298 Cluster Platform 3000 BL460c, Xeon 51xx 3.0GHz, GigEthernet 1704 N/A 11887.2 20448 HP
300 Cluster Platform 3000 BL460c, Xeon 54xx 2.66GHz, GigEthernet 1944 N/A 11825.8 20738.6 HP
308 Blue Gene/P Solution 4096 N/A 11710 13926.4 IBM
313 Cluster Platform 3000 BL460c, Xeon 54xx 2.5 GHz, GigEthernet 2048 N/A 11597.5 20480 HP
314 Cluster Platform 3000 BL460c, Xeon 54xx 2.5 GHz, GigEthernet 2048 N/A 11597.5 20480 HP
321 Zen
SGI Altix ICE 8200, Xeon quad core 2.83 GHz		 1152 2300 11210 13041 SGI
324 Cluster Platform 3000 BL460c, Xeon 54xx 2.33 GHz, GigEthernet 2128 N/A 11170.9 19833 HP
325 Cluster Platform 3000 BL460c, Xeon 54xx 2.33 GHz, GigEthernet 2128 N/A 11170.9 19833 HP
331 Cluster Platform 3000 BL460c, Xeon 54xx 3.0GHz, GigEthernet 1568 N/A 10998 18816 HP
333 Cluster Platform 3000 BL460c, Xeon 54xx 2.33 GHz, GigEthernet 2080 N/A 10954.2 19385.6 HP
336 Cluster Platform 3000 BL460c, Xeon 51xx 3.0GHz, Infiniband 1392 N/A 10857 16704 HP
360 Cluster Platform 3000 BL460c, Xeon 54xx 2.66GHz, GigEthernet 1672 N/A 10328 17790 HP
371 CX1
PowerEdge 1955, 2.66 GHz, Gigabit/10G Infiniband		 1680 1680 10100 17922.2 Dell
379 BladeCenter HS21 Cluster, Xeon dual core, 3 GHz, GigEthernet 2016 N/A 9949 24192 IBM
384 xSeries x3550 Cluster Xeon, 3 GHz, GigEthernet 1700 N/A 9914.07 20400 IBM
388 BladeCenter LS20, Opteron 2.2 GHz Dual core, GigEthernet 4000 N/A 9850 17600 IBM
389 BladeCenter LS20, Opteron 2.2 GHz Dual core, GigEthernet 4000 N/A 9850 17600 IBM
395 Cluster Platform 3000 BL460c, Xeon 53xx 2.66GHz, GigEthernet 1560 N/A 9732.3 16642.1 HP
420 Cluster Platform 3000 BL460c, Xeon 53xx 2.33GHz, GigEthernet 1744 N/A 9392 16254.1 HP
422 Cluster Platform 3000 BL460c, Xeon 54xx 3.0GHz, GigEthernet 1312 N/A 9355.3 15744 HP
423 Cluster Platform 3000 BL460c, Xeon 51xx 3.0GHz, GigEthernet 1304 N/A 9334.3 15648 HP
438 xSeries x3550 Cluster Xeon quad core, 2.333 GHz, GigEthernet 2048 N/A 9287 19111.9 IBM
445 BladeCenter HS21 Cluster, Xeon quad core 2.33 GHz, GigEthernet 1904 N/A 9287 17768.1 IBM
471 Cluster Platform 3000 BL460c, Xeon 51xx 3.0GHz, GigEthernet 1464 N/A 9221.6 15618 HP
472 Cluster Platform 3000 BL460c, Xeon 51xx 3.0GHz, GigEthernet 1464 N/A 9221.6 15618 HP
473 Cluster Platform 3000 BL460c, Xeon 53xx 2.33GHz, GigEthernet 1696 N/A 9162.3 15806.7 HP
476 BladeCenter HS21 Cluster, Xeon dual core 3.0 GHz, Infiniband 960 N/A 9058 11520 IBM