Crucial ballistix sport xt 4gb kit ddr3 1866 cl10 bls2c4g3d18ads3j
2 x 2 gb 2048 mb 4gb ddr3 kit memory capacity 4 gb bus clock speed 1 866 mhz specification pc3 14900 memory latency cl 10 10 10 30 ram operation mode dual channel voltage 15 v form factor 240 pin width 175 mm max operating temperature 85 c