How much space does Lion occupy?

Does anyone know how much memory is consumed by Lion?
Tech specs call for 7 GB free space. My earlier version imac has a max memory capacity of 8 GB. Should I consider Lion?
Thanks,
Hugh

Hello iphoneapp,
Thank you for helping my last two brain cells synapse. I was confusing memory with hard drive capacity.
However, after reading the forum comments regarding Lion I think I will stay with Snow Leopard.

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TEST.SQL>CREATE TABLE TBLOB
2 (
3 A BLOB
4 ) TABLESPACE _SANITIZED_;
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YJAM                           TBLOB                                                                                                            TABLE
_SANITIZED_                                  0         16    1201289    5242880        640           16
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SUBOBJECT_NAME                  OBJECT_ID DATA_OBJECT_ID OBJECT_TYPE        CREATED LAST_DDL TIMESTAMP           STATUS T G S
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TEST.SQL>SELECT * FROM DBA_EXTENTS WHERE SEGMENT_NAME='SYS_LOB0000920875C00001$$';
OWNER                          SEGMENT_NAME                                                                      PARTITION_NAME                 SEGMENT_TYPE
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YJAM                           SYS_LOB0000920875C00001$$                                                                                        LOBSEGMENT
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OWNER                          SEGMENT_NAME                                                                      PARTITION_NAME                 SEGMENT_TYPE
TABLESPACE_NAME                 EXTENT_ID    FILE_ID   BLOCK_ID      BYTES     BLOCKS RELATIVE_FNO
YJAM                           TBLOB                                                                                                            TABLE
_SANITIZED_                                  0         16    1201289    5242880        640           16
YJAM                           TBLOB                                                                                                            TABLE
_SANITIZED_                                  1         17    1169929    5242880        640           17
YJAM                           TBLOB                                                                                                            TABLE
_SANITIZED_                                  2         18    1163529    5242880        640           18
YJAM                           TBLOB                                                                                                            TABLE
_SANITIZED_                                  3         19    1176969    5242880        640           19
YJAM                           TBLOB                                                                                                            TABLE
_SANITIZED_                                  4          5     379529    5242880        640            5
YJAM                           TBLOB                                                                                                            TABLE
_SANITIZED_                                  5         14     375689    5242880        640           14
YJAM                           TBLOB                                                                                                            TABLE
_SANITIZED_                                 51         18    1172489    5242880        640           18
YJAM                           TBLOB                                                                                                            TABLE
_SANITIZED_                                 52         19    1191689    5242880        640           19
YJAM                           SYS_LOB0000920875C00001$$                                                                                        LOBSEGMENT
_SANITIZED_                                  0         16    1202569    5242880        640           16
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2    FOR i IN 1..100000
3    LOOP
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TEST.SQL>SELECT BYTES/1024 FROM DBA_SEGMENTS WHERE SEGMENT_NAME='TBLOB';
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HTH,
Yoann.
Message was edited by:
Yoann Mainguy
Hmm, forgot that for a full comparison of the avg linesize:
TEST.SQL>SELECT * FROM DBA_TABLES WHERE TABLE_NAME='TBLOB';
OWNER                          TABLE_NAME                     TABLESPACE_NAME                CLUSTER_NAME                   IOT_NAME                         PCT_FREE   PCT_USED
INI_TRANS MAX_TRANS INITIAL_EXTENT NEXT_EXTENT MIN_EXTENTS MAX_EXTENTS PCT_INCREASE FREELISTS FREELIST_GROUPS LOG B   NUM_ROWS     BLOCKS EMPTY_BLOCKS AVG_SPACE CHAIN_CNT
AVG_ROW_LEN AVG_SPACE_FREELIST_BLOCKS NUM_FREELIST_BLOCKS DEGREE     INSTANCES CACHE TABLE_LO SAMPLE_SIZE LAST_ANA PAR IOT_TYPE     T S NES BUFFER_ ROW_MOVE GLO USE
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YJAM                           TBLOB                          _SANITIZED_                                                                   10
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