The database for the SiSoft Sandra benchmark has thrown up an interesting benchmark run for an AMD Engineering Sample that is identified as 'AMD Gardenia Carrizo'. As far as we know Gardenia implies that this is a mobile Carrizo part, which is further backed up by the fact the benchmark log shows SODIMM memory was used. The benchmark run, which was submitted a week ago, runs through a variety of CPU, GPU and memory tests before spitting out an overall system score.
CPU
Assessing the CPU component first the AMD Engineering sample, with four cores at 2.5GHz, attained a process arithmetic benchmark score of 28.59 GOPS. That score compares favourably to Intel's 2.6-watt Bay Trail J1900 that typically scores between 18-24 GOPS and is only a little slower than AMD's current desktop A10-7850K APU.
|
AMD A10-7850K
|
AMD Gardenia Carrizo
|
AMD E2-1800
|
Intel Celeron J1900
|
|
| Processor Arithmetic (GOPS) |
40.4
|
28.6
|
7.4
|
21.1
|
| Processor Multi-Media (Mpix/s) |
94.4
|
76.99
|
11.6
|
37.42
|
GPU
The AMD Gardenia Carrizo part produced 1.70GB/s of video memory bandwidth and 29.11Mpix/s of video shader compute. Context is also important here since the numbers only mean something relative to what else is on the market, and the below table makes a few comparisons. It is worth noting the APU makes use of DDR3-800 SODIMM memory for the video memory, meaning GPU performance is likely constrained.
In GPGPU compute, which is not bandwidth sensitive, the AMD Carrizo APUs fares much better offering up to 606Mpix/s.
|
AMD A10-7850K (R7 Graphics)
|
AMD Gardenia Carrizo
|
Nvidia GT 730
|
Intel Iris Pro HD 5200
|
|
| Video Shader Compute (Mpix/s) |
173
|
29
|
104
|
239
|
| Video Memory Bandwidth (GB/s) |
11.5
|
1.7
|
7.2
|
25.7
|
| GPGPU Compute (Mpix/s) |
298
|
606
|
156
|
207
|
Memory
Looking at the memory bandwidth the Carrizo APU scored 14.76GB/s - a seemingly impressive number given its limited system memory frequency. Finding a direct comparison to this is difficult since few systems use memory as slow as DDR3 800MHz. However, most logs for Intel and AMD desktop PCs in dual-channel configurations reveal results between 14-20GB/s with dual channel 1600MHz memory. The AMD Carrizo APU, therefore, seems to be working some kind of wizardry with memory bandwidth: HSA technology at play, perhaps?
While we can't be sure the database entry is legitimate, or what product it actually refers to, the results certainly do not seem far-fetched for AMD's recently announced mobile Carrizo APUs. This particular mobile part likely sits atop the Carrizo stack, so we'd estimate the TDP is probably in the 35-watt region given the fact this is a mobile part.
There are a lot of numbers to digest but if you want to make some comparisons of your own you can head over to the SiSoft Sandra database entry and take a look for yourself.
