The ability to support high data rates on a CPU with an integrated memory controller requires a modern processor and properly programmed firmware. One of those requisites is often missing from previous-generation machines. G.Skill supports the broader market by producing lower-cost modules for those systems.

Sold under the G.Skill part number F3-1333C9D-16GSL as a dual-channel kit, CPU-Z misreports the tRAS of its F3-1333C9D-8GSL modules at 25 cycles in one of our test systems. Had our platform not been DDR3-1333-capable, DDR3-1066 CAS 7 is also supported.

Regardless of what CPU-Z said about the SPD table, our test platforms correctly set the 9-9-9-24 timings we were looking for at the memory’s highest-rated DDR3-1333 data rate.

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Summary
- Did You Know Mobile Haswell Doesn't Support 1.5 V DDR3?
- Ripjaws DDR3-1866 Low Voltage
- Ripjaws DDR3-1600 Low Voltage
- G.Skill Standard DDR3-1333
- Test Hardware And Software Configurations
- Results: SiSoftware Sandra
- Results: 3DMark
- Results: 3D Games
- Results: Adobe Creative Suite
- Results: File Compression
- Power, Efficiency, And Final Thoughts
Ask a Category Expert
The R version has 128MB of L4 cache. At 1280x720, it is large enough for all index and vertex buffers and most textures. That is why main memory speed doesn't significantly affect Iris Pro 5200...
intel claims that the edram costs around $80. that'd jack the a10 6800k price over $200 only to benefit the igpu (possibly the same with gddr5). imo, the weaker cpu cores wouldn't benefit much, if at all. that'd make the apus of poor value and people will argue against the apus claiming you can have a faster configuration under $200 (e.g. core i3 4110/fx6300 + radeon 7770/7750) without requiring the edram. as for core i7 4770R (and other R skus) - it's way too expensive. afaik, brix pro is barebones, the whole pc might cost near $800-1000 fully configured.
Simply wait for Broadwell-K near the end of this year and you will get the option of buying a $300+ i5 or $400+ i7 with 128MB L4 cache and Iris Pro.
From what little info leaked about it so far, it is still unclear whether or not there will be an option to buy a desktop Broadwell without that ~$100 extra.