Merom (microprocessor)
Encyclopedia
Merom is the code name for various Intel processors that are sold as Core 2 Duo, Core 2 Solo, Pentium Dual-Core and Celeron
. It was the first mobile processor to be based on the Core microarchitecture, replacing the Enhanced Pentium M based Yonah processor. Merom has product code 80537, which is shared with Merom-2M and Merom-L that are very similar but have a smaller L2 cache
. Merom-L has only one processor core and a different CPUID model. The desktop version of Merom is Conroe
and the dual-socket server version is Woodcrest. Merom has subsequently been replaced by Penryn
.
The first version of Merom is "drop-in" compatible with Napa platform for Core Duo, requiring at most a motherboard BIOS update. It has a similar thermal envelope
of 34 W and the same 667 MT/s FSB rate. The Merom die features 4 MB L2 cache, half of which is deactivated in the T5xx0 CPUs. A native 2 MB L2 version of the Merom core, called Merom-2M, was rolled out in early 2007 as a counterpart to Allendale. The Merom-2M core uses the steppings L2 and M0 and the ultra-low-voltage versions of the Core 2 Duo use this core.
A second wave of Merom processors featuring an 800 MT/s FSB and using the new Socket P
was launched on May 9, 2007. These chips are part of Santa Rosa platform. Low voltage versions were also released on May 9, 2007.
Merom (מרום) is the Hebrew word for a higher plane of existence or a level of heaven, BaMerom (במרום) means "in the heavens". The name was chosen by the Intel team in Haifa
, Israel
, who designed this processor.
The X7900 processor was used in the top-end iMacs released on August 7, 2007.
and Socket P
systems as Celeron 5xx and Core 2 Solo U2xxx, some of which also use regular Merom and Merom-2M chips with one core disabled in contrast to the real Merom-L that only has 1 MB L2 cache and a single core. The CPUID is family 6 model 23 (10661h), which is between Merom and Penryn
.
The first Core 2 Solo processors were launched in Q3 2007 and consisted of the U2100 and U2200, which run at 1.06 and 1.2 GHz, respectively. They both feature a 533 MT/s FSB and are part of Intel's ULV family, running at only 5 W. Like the rest of the Core 2 family, they are 64-bit compatible. They were released with compatibility for the Napa platform rather than the newer Santa Rosa platform due to power consumption concerns.
Celeron
Celeron is a brand name given by Intel Corp. to a number of different x86 computer microprocessor models targeted at budget personal computers....
. It was the first mobile processor to be based on the Core microarchitecture, replacing the Enhanced Pentium M based Yonah processor. Merom has product code 80537, which is shared with Merom-2M and Merom-L that are very similar but have a smaller L2 cache
CPU cache
A CPU cache is a cache used by the central processing unit of a computer to reduce the average time to access memory. The cache is a smaller, faster memory which stores copies of the data from the most frequently used main memory locations...
. Merom-L has only one processor core and a different CPUID model. The desktop version of Merom is Conroe
Conroe (microprocessor)
Conroe is the code name for many Intel processors sold as Core 2 Duo, Xeon, Pentium Dual-Core and Celeron. It was the first desktop processor to be based on the Core microarchitecture, replacing the NetBurst microarchitecture based Cedar Mill processor. It has product code 80557, which is shared...
and the dual-socket server version is Woodcrest. Merom has subsequently been replaced by Penryn
Penryn (microprocessor)
Penryn is the code name of a processor from Intel that is sold in varying configurations as Core 2 Solo, Core 2 Duo, Core 2 Quad, Pentium and Celeron....
.
Variants
| Processor | Brand name | Model (list) | Cores | L2 Cache | Socket | TDP |
|---|---|---|---|---|---|---|
| Merom-L | Mobile Core 2 Intel Core 2 Core 2 is a brand encompassing a range of Intel's consumer 64-bit x86-64 single-, dual-, and quad-core microprocessors based on the Core microarchitecture. The single- and dual-core models are single-die, whereas the quad-core models comprise two dies, each containing two cores, packaged in a... Solo |
U2xxx | 1 | 2 MiB | BGA479 | 5.5 W |
| Merom-2M | Mobile Core 2 Duo | U7xxx | 2 | 2 MiB | BGA479 | 10 W |
| Merom | L7xxx | 4 MiB | 17 W | |||
| Merom Merom-2M |
T5xxx T7xxx |
2-4 MiB | Socket M Socket M Socket M is a CPU interface introduced by Intel in 2006 for the Intel Core line of mobile processors.-Technical specifications:Socket M is used in all Intel Core products, as well as the Core-derived Dual-Core Xeon codenamed Sossaman... Socket P Socket P The Intel Socket P is the mobile processor socket replacement for Core microarchitecture chips such as Core 2 Duo. It launched on May 9, 2007, as part of the Santa Rosa platform with the Merom and Penryn processors.-Technical specifications:... BGA479 |
35 W | ||
| Merom | Mobile Core 2 Extreme | X7xxx | 2 | 4 MiB | Socket P | 44 W |
| Merom | Celeron M | 5x0 | 1 | 512 KiB | Socket M Socket P |
30 W |
| Merom-L | 5x0 | 27 W | ||||
| Merom-2M | 5x5 | Socket P | 31 W | |||
| Merom-L | 5x3 | 512-1024 KiB | BGA479 | 5.5-10 W | ||
| Merom-2M | Celeron Dual-Core | T1xxx | 2 | 512-1024 KiB | Socket P | 35 W |
| Merom-2M | Pentium Dual-Core | T2xxx T3xxx |
2 | 1 MiB | Socket P | 35 W |
Merom
Merom, the first mobile version of the Core 2, was officially released on July 27, 2006 but quietly began shipping to PC manufacturers in mid-July alongside Conroe. Merom became Intel's premier line of mobile processors, with mostly the same features of Conroe, but with more emphasis on low power consumption to enhance notebook battery life. Merom-based Core 2 Duo provides a slight performance increase associated with 3D rendering and media encoding tasks http://www.anandtech.com/cpuchipsets/showdoc.aspx?i=2808&p=17, yet maintains the same battery life as the Yonah-based Core Duo. Merom is the first Intel mobile processor to feature Intel 64 architecture.The first version of Merom is "drop-in" compatible with Napa platform for Core Duo, requiring at most a motherboard BIOS update. It has a similar thermal envelope
Thermal Design Power
The thermal design power , sometimes called thermal design point, refers to the maximum amount of power the cooling system in a computer is required to dissipate. For example, a laptop's CPU cooling system may be designed for a 20 watt TDP, which means that it can dissipate up to 20 watts of heat...
of 34 W and the same 667 MT/s FSB rate. The Merom die features 4 MB L2 cache, half of which is deactivated in the T5xx0 CPUs. A native 2 MB L2 version of the Merom core, called Merom-2M, was rolled out in early 2007 as a counterpart to Allendale. The Merom-2M core uses the steppings L2 and M0 and the ultra-low-voltage versions of the Core 2 Duo use this core.
A second wave of Merom processors featuring an 800 MT/s FSB and using the new Socket P
Socket P
The Intel Socket P is the mobile processor socket replacement for Core microarchitecture chips such as Core 2 Duo. It launched on May 9, 2007, as part of the Santa Rosa platform with the Merom and Penryn processors.-Technical specifications:...
was launched on May 9, 2007. These chips are part of Santa Rosa platform. Low voltage versions were also released on May 9, 2007.
Merom (מרום) is the Hebrew word for a higher plane of existence or a level of heaven, BaMerom (במרום) means "in the heavens". The name was chosen by the Intel team in Haifa
Haifa
Haifa is the largest city in northern Israel, and the third-largest city in the country, with a population of over 268,000. Another 300,000 people live in towns directly adjacent to the city including the cities of the Krayot, as well as, Tirat Carmel, Daliyat al-Karmel and Nesher...
, Israel
Israel
The State of Israel is a parliamentary republic located in the Middle East, along the eastern shore of the Mediterranean Sea...
, who designed this processor.
Merom XE
The Core 2 Extreme Mobile processor, based on the Merom XE core, is a mobile CPU designed for laptops. It was released in two models, the X7900 and the X7800. These feature an 800 MT/s FSB. The X7800, introduced on July 16, 2007, is clocked at 2.6 GHz and costs around $851 for OEMs. The processor features a 44 W TDP and requires the new Intel Centrino (Santa Rosa) platform. The X7900, introduced on August 22, 2007, is clocked at 2.8 GHz.The X7900 processor was used in the top-end iMacs released on August 7, 2007.
Merom-2M
The mobile version of the Allendale desktop processor is often called Merom-2M to identify the smaller L2 cache. Some T5xxx and T7xxx processors have come out with both Merom and Merom-2M dies, which can only be distinguieshed through their stepping number.Merom-L
The Merom-L processor is based on the same model as Conroe-L but is used in mobile Socket MSocket M
Socket M is a CPU interface introduced by Intel in 2006 for the Intel Core line of mobile processors.-Technical specifications:Socket M is used in all Intel Core products, as well as the Core-derived Dual-Core Xeon codenamed Sossaman...
and Socket P
Socket P
The Intel Socket P is the mobile processor socket replacement for Core microarchitecture chips such as Core 2 Duo. It launched on May 9, 2007, as part of the Santa Rosa platform with the Merom and Penryn processors.-Technical specifications:...
systems as Celeron 5xx and Core 2 Solo U2xxx, some of which also use regular Merom and Merom-2M chips with one core disabled in contrast to the real Merom-L that only has 1 MB L2 cache and a single core. The CPUID is family 6 model 23 (10661h), which is between Merom and Penryn
Penryn (microprocessor)
Penryn is the code name of a processor from Intel that is sold in varying configurations as Core 2 Solo, Core 2 Duo, Core 2 Quad, Pentium and Celeron....
.
The first Core 2 Solo processors were launched in Q3 2007 and consisted of the U2100 and U2200, which run at 1.06 and 1.2 GHz, respectively. They both feature a 533 MT/s FSB and are part of Intel's ULV family, running at only 5 W. Like the rest of the Core 2 family, they are 64-bit compatible. They were released with compatibility for the Napa platform rather than the newer Santa Rosa platform due to power consumption concerns.
See also
- Yonah (microprocessor)
- Conroe (microprocessor)Conroe (microprocessor)Conroe is the code name for many Intel processors sold as Core 2 Duo, Xeon, Pentium Dual-Core and Celeron. It was the first desktop processor to be based on the Core microarchitecture, replacing the NetBurst microarchitecture based Cedar Mill processor. It has product code 80557, which is shared...
- Penryn (microprocessor)Penryn (microprocessor)Penryn is the code name of a processor from Intel that is sold in varying configurations as Core 2 Solo, Core 2 Duo, Core 2 Quad, Pentium and Celeron....
- CeleronCeleronCeleron is a brand name given by Intel Corp. to a number of different x86 computer microprocessor models targeted at budget personal computers....
- Pentium Dual-Core
- Intel Core 2Intel Core 2Core 2 is a brand encompassing a range of Intel's consumer 64-bit x86-64 single-, dual-, and quad-core microprocessors based on the Core microarchitecture. The single- and dual-core models are single-die, whereas the quad-core models comprise two dies, each containing two cores, packaged in a...