请问1G等于多少KB？

页面:/news/view-3242704/ | 耗时:0.5177 s | 内存:1.89 MB | 查询:4 | 缓存读取:4 写入:0 | 加载文件:23
select * from tbl_Articles WHERE ArticleID=3242704 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=3242704 LIMIT 0,1
select * from tbl_Articles_sphinx where id=3242704 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1139021,1100084,3522885,833898,3459566,493915,987418,1506234,2078933,3268361,2069134,2503556,815762,926579,1648041,2894430,3132622,434972,1151358,2540373,1031964,3402560,1611030,2091117,1199791,383119,2008268,3488205,471583,2524958) ORDER BY field (ArticleID,1139021,1100084,3522885,833898,3459566,493915,987418,1506234,2078933,3268361,2069134,2503556,815762,926579,1648041,2894430,3132622,434972,1151358,2540373,1031964,3402560,1611030,2091117,1199791,383119,2008268,3488205,471583,2524958)