I've messed with Dells as far as modding and using for secondary gaming rigs at home for the grand kids when they come over. I get them from the local state surplus on the cheap. The newer Dell desktops have finally gotten away from the godawful BTX motherboard design and gone to mini ATX which are much easier to throw into a traditional ATX style case.
I recently picked up an Optiplex 990 with a core i7 2600 and decided to set it up for a gaming rig with a modded R9 290 overclocked 1050core 1300mem using a Corsair CM650 psu. The resalt was great. Actually benched better than my FX 8320e@ 4.5ghz in Warthunder and Firestrike benches, which for the $25 I paid for it I thought was pretty nice.
I then came across a Dell Optiplex 1070 which had a core i7 3770 in it and was intrigued by the prospect of the ivy bridge cpu and its advantages over the i7 2600 sandy bridge, so I swapped everything over to it. Thats when I started having problems. The 1070 was not stable unless I down clocked the R9 290 to 850mhz core and 1250mhz mem. I also thrrew in a HD 7870 I had lying around and it would run fine at its 1050mhz gpu / 1250 mem stk clocks and using its dual 6-pin pcie connections.
I have read before that Dell supplies lower power to their Pci-e x16 slots than is Pci-e spec, so I am assuming that is the wall I hit with the 1070 motherboard vs the 990. The 1070 would start Firestrike and run it for about 30-45sec and then I would see brief video corruption and it would cause a system crash/ re-start of the computer. I guess the bottom line is the 990 good, 1070 bad. Also I upgraded to the latest 1070 bios which did not help.
I recently picked up an Optiplex 990 with a core i7 2600 and decided to set it up for a gaming rig with a modded R9 290 overclocked 1050core 1300mem using a Corsair CM650 psu. The resalt was great. Actually benched better than my FX 8320e@ 4.5ghz in Warthunder and Firestrike benches, which for the $25 I paid for it I thought was pretty nice.
I then came across a Dell Optiplex 1070 which had a core i7 3770 in it and was intrigued by the prospect of the ivy bridge cpu and its advantages over the i7 2600 sandy bridge, so I swapped everything over to it. Thats when I started having problems. The 1070 was not stable unless I down clocked the R9 290 to 850mhz core and 1250mhz mem. I also thrrew in a HD 7870 I had lying around and it would run fine at its 1050mhz gpu / 1250 mem stk clocks and using its dual 6-pin pcie connections.
I have read before that Dell supplies lower power to their Pci-e x16 slots than is Pci-e spec, so I am assuming that is the wall I hit with the 1070 motherboard vs the 990. The 1070 would start Firestrike and run it for about 30-45sec and then I would see brief video corruption and it would cause a system crash/ re-start of the computer. I guess the bottom line is the 990 good, 1070 bad. Also I upgraded to the latest 1070 bios which did not help.
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