E6750 - pictures and specifications
While the Core 2 Extreme may be the glamorous performance model that everyone wants, its £600 price-ticket means that it's unaffordable or, at least, unjustifiable, to most people.
Thankfully for those with wallets containing more moths than money or who just have a normal amount of common sense, Intel is also refreshing its Core 2 Duo E6000 range.
As with the Core 2 Extreme QX6850, this sees the speed of the front-side bus raised to 333MHz (1333MHz QDR). These new E6000 parts are differentiated from existing 266MHz CPUs by use of the 50 suffix. So, for example, E6700 becomes E6750.
The revised range will include the 3GHz Core 2 Duo E6850 that replaces the Core 2 Extreme X6800 as Intel's fastest dual-core desktop CPU. However, today we're looking at the 2.66GHz Core 2 Duo E6750.
| Processor name | Intel Core 2 Duo E6750 | Intel Core 2 Duo E6700 | AMD Athlon 64 X2 6000+ | AMD Athlon 64 X2 5600+ | AMD Athlon 64 X2 5200+ |
|---|---|---|---|---|---|
| Form factor | LGA775 | LGA775 | AM2 | AM2 | AM2 |
| Manufacturing process | 65nm | 65nm | 90nm | 90nm | 90nm |
| Physical cores | 2 | 2 | 2 | 2 | 2 |
| Inst. per clock* | 4 | 4 | 3 | 3 | 3 |
| Pipeline stages | 14 | 14 | 12 | 12 | 12 |
| Clock speed | 2.66GHz | 2.66GHz | 3.0GHz | 2.8GHz | 2.6GHz |
| FSB | 333MHz (1333MHz QDR) | 266MHz (1066MHz QDR) | 200MHz | 200MHz | 200MHz |
| Memory support | DDR2/3, 800MHz, 1066MHz DC | DDR2/3, 800MHz, 1066MHz DC | DDR2, 800MHz, DC | DDR2, 800MHz, DC | DDR2, 800MHz, DC |
| L1 cache total | 64KiB data + 64KiB code | 64KiB data + 64KiB code | 128KiB data + 128KiB code | 128KiB data + 128KiB code | 128KiB data + 128KiB code |
| L2 cache total | 4MiB | 4MiB | 2MiB | 2MiB | 2MiB |
| ISA | x86, x86-64, SSE-SSSE3 | x86, x86-64, SSE-SSSE3 | x86, x86-64, SSE-SSE3 | x86, x86-64, SSE-SSE3 | x86, x86-64, SSE-SSE3 |
| TDP | 65W | 65W | 125W | 89W | 65/89W |
| Transistors | 291m | 291m | 227m | 227m | 227m |
| Operating voltage | 1.2-1.3625V | 1.2-1.3625V | 1.3-1.4V | 1.3-1.4V | 1.3-1.4V |
| Current price | £120 | £194 | £108 | £95 | £85 |
The E6750 is officially priced at $183 in quantities of 1,000 - the same as the E6420 at the time of writing - so we assume a retail price of around £120. On July 22, there will be a price cut on the E6700 - and other CPUs in the range will follow suit, dropping down a price-notch or two.
If our assumption is correct, then the E6750 will be priced slightly above AMD's range-topping Athlon 64 X2 6000+. As a result, the AMD's most direct competitors will be the E6600 and E6650.
As with the QX6850, the supplied E6750 was just a standard-looking Intel engineering sample.
And the capacitor layout is the same as Conroes we've looked at in the past.
Our sample Core 2 Duo E6750 also comes with the new G0 stepping core. In the absence of any official explanation, it's our assumption that G0 is designed to slightly lower the Thermal Design Power (TDP) and possibly fix some of the errata in the B2 stepping. The 3GHz E6850 should be a 65W part, whereas the X6800 is 80W.
